Niall Horan has asked Jessie J to marry him.
The One Direction hunk, 21, took to his Twitter account tonight (19.10.14) to jokingly propose to the 'Bang Bang' hitmaker, 26, after she wowed him with her sexy performance on the UK's 'X Factor' this evening.
He tweeted: "@JessieJ marry me ! (sic)."
The brunette beauty - whose real name is Jessica Cornish - is yet to reply to the singer's question.
However, this isn't the first time Niall has popped the question to a fellow celebrity on the social networking site as last year he asked Katy Perry to marry him.
He tweeted after she performed on the singing competition's results show last October: "I love you @katyperry! Thank you! Ps. Will u marry me?"
Last November, Niall took to his Instagram account to post a photograph of himself, his band mates and the 'Roar' hitmaker, 29 - who was dating John Mayer at the time - to tell his fans she had accepted his proposal.
He wrote alongside the snap: "She said yes ! It's happening! Haha (sic)."
It seems Niall will always have a soft spot for Katy - who is now believed to be single - as she helped kickstart his career in 2010 when she requested that he join the boy band, alongside Zayn Malik, Louis Tomlinson, Liam Payne and Harry Styles, after he initially auditioned for the 'X Factor' as a solo artist.

Tim Wonnacott has been eliminated from 'Strictly Come Dancing' tonight (19.10.14).
The antiques expert, 64, has become the latest celebrity to be given the boot from the Ballroom and Latin competition after he and his professional partner Natalie Lowe lost the dance-off against Mark Wright.
The 'Bargain Hunt' host and his stunning partner performed their Paso Doble to 'Simply the Best' by Tina Turner but failed to wow the judges with the aggressive routine as Len Goodman, Darcey Bussell, Bruno Tonioli and Craig Revel Horwood unanimously chose to save the reality TV star and his partner Karen Hauer.
Speaking after the result, Tim said: "It's a great treat to be on a programme like 'Strictly.' For an old geezer like me, who comes along in his 64th year and he's slightly portly, and he thinks he's a bit over the hill, this last month, with this delightful teacher, has taken me to a very special place.
"I am fitter, I am a better person than I was a month ago as a result of this experience and I cannot tell you what a wonderful thing this whole programme is so I commend you all and thank you.
"I would like to say what a treat it's been. Thank-you very much, and thank-you to my lovely Nat."
'Strictly Come Dancing' will continue next Saturday at 6:30pm on BBC One.

Stephanie Nala and Chloe-Jasmine Whichello were given the boot from 'The X Factor' tonight (19.10.14).
The 20-year-old beauty and the posh blonde were kicked off the ITV singing competition in a shock double-eviction after they failed to win over the audience with their performances last night (18.10.14).
Stephanie, who was in the sing-off last week against Overload Generation, was the first to be given the axe after she received the lowest number of public votes.
Chloe-Jasmine then took to the stage for the sing-off against Stereo Kicks but she failed to secure a place in next week's show as judges Mel B, Louis Walsh and Simon Cowell chose to save the eight-piece boy band.
Cheryl Fernandez-Versini, who chose to save Chloe-Jasmine in the sing-off, was visibly upset to lose two acts from her category in tonight's programme.
Speaking afterwards, Chloe-Jasmine praised her mentor and thanked her for choosing to put her through to the live shows following a tough boot camp.
She said of leaving the competition just two weeks in: "Don't worry about it! Cheryl, you are absolutely wonderful, thank you for taking a chance on me."
Cheryl will now focus all of her attention on her remaining girls, Lauren Platt and Lola Saunders, who are fighting to succeed in the competition.
Meanwhile, the results show also featured live performances from Jessie J and Maroon 5.

The Vamps were the big winners at the BBC Radio 1's Teen Awards in London tonight (19.10.14).
The 'Wild Heart' hitmakers walked away with three prizes at the glamorous event, held at the SSE Arena, Wembley, after beating off stiff competition from the likes of Ed Sheeran, One Direction and Sam Smith.
The band - consisting of Brad Simpson, James McVey, Connor Ball and Tristan Evans - secured the Best British Single gong for their hit track 'Last Night' and the Friday Download Best British Breakthrough award, as well as being crowned the Best British Group.
Speaking to BANG Showbiz on the red carpet, the group said of their win: "It feels amazing. We've been up against some massive artists. We didn't think we'd win any! It's all down to the fans, it's ridiculous."
Other winners at the event, which was hosted by Radio 1 Breakfast Show presenter Nick Grimshaw and pop star Rita Ora, included Ed Sheeran, who walked away with the Best British Solo Artist prize.
'EastEnders' star Lorna Fitzgerald - who plays intelligent teen Abi Branning in the soap - was crowned the Best British Actress, while Olympic diver Tom Daley won the Best British Sports Star prize, and crime drama 'Sherlock' was named the Best British TV Show.
The Teen Heroes were nominated by Radio 1 listeners for their outstanding achievements and selected as Teen Hero winners by a panel of judges.

The full list of BBC Radio 1 Teen Award winners 2014 are as follows:

Best British Actor - Lorna Fitzgerald
Best British TV Show - 'Sherlock'
Best British Solo Artist - Ed Sheeran
Best British Single - 'Last Night' - The Vamps
Best British Sports Star - Tom Daley
Best British Vlogger - Zoe 'Zoella' Sugg
Best British Group - The Vamps
Friday Download Best British Breakthrough Award - The Vamps

Victoria Beckham is "petrified" about her son learning to ride a motorcycle next year.
The former Spice Girls singer is worried about Brooklyn getting his moped licence when he turns 16 next March after her husband David crashed his bike in August.
A source told the Sunday Mirror newspaper: "Victoria is petrified. It's every mum's worst nightmare when their child wants a motorbike. But Brooklyn is so determined, he loves it as much as his dad.
"He loves motorcycles and can't wait to be 16 next spring, when he can take his test."
The 40-year-old designer would never stop her children - including Romeo, 12, Cruz, nine, and Harper, three - from doing anything they want to do but she's hoping Brooklyn changes his mind about getting a bike.
The source explained: "David and Victoria would never want to stop their children doing anything but she is hoping Brooklyn changes his mind. It scares the living daylights out of her."
David, 39, was left battered and bruised this summer after he came off his motorcycle in Los Angeles as he was leaving a Sunset Boulevard tattoo parlour.
He said at the time: "It was not a great experience but I was lucky. Riding bikes is dangerous at times."

Katie Price has bought a new mansion.
The 36-year-old star, her husband Kieran Hayler, and five children moved into the nine-bedroom mansion, which is located next door to her old home, in West Sussex last month after snapping it up for £1.3 million.
The former glamour model bought the lavish home, which boasts a two-bedroom annexe, a tennis court, stables and 12 acres of land, from the United Kingdom's Cabinet Office Minister, Francis Maude, according to The Sun on Sunday newspaper.
Katie has sold her old mansion, which she bought with her ex-husband Alex Reid in 2010, to Olympic gold-medallist showjumper Scott Brash, 28, for £2million.
The stunning star decided to wave goodbye to her old home in order for a fresh start after it was revealed Kieran, with whom she has 14-month-old son Jett and two-month-old daughter Bunny, had been having an affair with her best friend Jane Pountney in its stables.
Katie has given the builder, whom she married in January 2013, a second chance but she insists she will walk away if Kieran - who also had an affair with her pal Chrissy Thomas - slips up for a second time.
She said previously: "Some people say it would've been easier to walk away but I wanted to stay and make a go of it. I'll never forget what he did and this is his last chance - if he did anything else, I'd be off - but Kieran's changed so much. He's continuing with his therapy and is happy."
Katie also has 12-year-old son Harvey from her relationship with retired soccer player Dwight Yorke and nine-year-old son Junior and seven-year-old daughter Princess from her marriage to Peter Andre.

Mariah Carey and Nick Cannon are allegedly fighting over custody of their eight dogs following their split.
The former couple, who called time on their marriage in August, are reportedly locked in a bitter battle over who will have legal guardianship over their four-legged friends, The Good Reverend Pow Jackson, Mutley P Gore Jackson The Third, Jill E Beans, Pipitty Jackson, Cha, Jackie Lambchops, JJ and Speak E Beans, according to the Sunday Express newspaper.
The pair, who also have three-year-old twins Moroccan and Monroe together, have reportedly settled their £325 million fortune via their prenuptial agreement.
The 'America's Got Talent' host, 34, who married Mariah in 2008, has been throwing himself into his work since the split because making other people happy brightens up his day and hides his own issues.
He said recently: "That's why we all entertain, to put a smile on others' faces. I take that as a lifelong goal, but still, at the same time, take it one day at a time."
Meanwhile, it is not known why the duo ended their marriage after six years, but rumours suggest the hunky star had cheated on the 'Hero' hitmaker.
However, Nick claimed in August that infidelity had nothing to do with their break-up and insisted their main focus is, and always will be, on their children.

Matthew Morrison has got married.
The 'Glee' actor tied the knot with his longterm girlfriend Renee Puente in an intimate ceremony in Hawaii in front of just 50 close friends and family on Saturday (18.10.14), according to PEOPLE.com.
After the service, Renee, 31, gave Matthew, 35, a special Hula performance at the reception before the hunk joined her on the floor for couple's version.
The newly-weds, who have been dating since 2011, then rounded up their romantic performances with a duet of Laura Benanti's 'Starry Eyed/Video Games.'
The news the loved-up pair have got hitched comes as a surprise to fans at Matthew - who plays teacher Will Schuester in the comedy drama - previously predicted he wouldn't marry Renee until next year.
He said in 2013: "It's [the wedding] is going good. We're a little way off. Probably not until like 2015, so we're just taking our time. But we're well into it."
Meanwhile, it seems children could be next on the list for the duo, who got engaged in June last year, as Matthew has always wanted a family.
He said: "I've always wanted to have children, but when the holidays are here and I'm around kids more, I'm like; do I really want a kid?
"It's great to be able to enjoy them and then I'm like, OK, bye! Although when I'm 80 years old, I'm going to want kids and grandkids. That would be awesome."

Tina O'Brien has given birth to a baby boy.
The former 'Coronation Street' star, 31, and her boyfriend Adam Crofts welcomed the tiny tot into the world last week but they are yet to give him a name.
A source told the Sunday Mirror newspaper: "Tina and Adam are over the moon with their new arrival.
"They are a really down-to-earth couple and everyone in the area is delighted for them."
The stunning star - who was known for playing Sarah-Louise Platt in the ITV soap from 1999 until 2007 - announced earlier this year that she was pregnant with her and personal trainer Adam's first baby.
She posted a picture of an ultrasound in March, which was accompanied with the message: "So @adstraining85 and I have some lovely news..."
Tina also admitted at the time that she couldn't wait for her five-year-old daughter Scarlett - whom she shares with ex-husband Ryan Thomas - to become a sister.
After a series of congratulatory messages from both co-stars and fans,Tina tweeted: "Thanks for your lovely comments we are so happy! Can't wait to have a little brother or sister for Scarlett to boss around (sic)."
The blonde beauty has been dating Adam for three years and just one year into their relationship, Tina admitted she could see herself marrying the hunk.
She said two years ago: "Adam is all of the things I want in a man. He is wonderful, very, very caring and supportive and he makes me happy. It's hard to explain how special he is, but I know he's got my back.
"And I fancy the pants off him too - which always helps. Do I want to get married again? Yeah, maybe..."

George Clooney is reportedly throwing a party in Buckinghamshire next week to celebrate his wedding.
The 53-year-old hunk and his beau Amal Alamuddin, 36, who got married in Venice last month, are having a private bash at the lavish Danesfield House, which overlooks the River Thames, next Friday (24.10.14).
A source told The Sun newspaper: "Amal has a lot of her family in the UK so it made sense for them to hold another bash here following last month's wedding."
However, it is not known who else will be attending the party in South East England as members of staff at the posh hotel have been told to remain tight-lipped.
The insider added: "Hotel staff are under strict orders not to let slip who their upcoming guests are -- but everyone is buzzing about their arrival."
Meanwhile, the newly-weds recently splashed out £10 million on their first marital home - a plush Georgian riverside mansion in the small village of Sonning Eye, Oxfordshire, central England.
Their new property in the Home Counties boasts a steam room, gym, study, library, cellar and even a boat house, and the area is said to be home to many rich dwellers, including financiers and Arab sheiks and is often frequented by the Home Secretary, Theresa May.
Meanwhile, George already owns several properties, including a mansion in Lake Como, Italy, and a home in Los Cabos, Mexico, where he counts Cindy Crawford as his next door neighbour.

Malin Akerman's son has started to say swear words.
The 'Couples Retreat' actress was left stunned when 17-month-old Sebastian, with whom she has with husband Roberto Zincone, cursed while they were watching a movie in their hotel room in Las Vegas.
Speaking to E! News, Malin explained: "He's walking and talking and he said his first F-bomb. We were watching 'Dolphins.' We were in Vegas at one of the hotels. I don't know where he got it from.
"He must have heard it somewhere but he's a sponge now. He said it about five times in a row with a lot of passion. I just laughed. He's too young. I'm going to be very careful what I say."
However, despite trying to stop Sebastian from spitting out naughty words, the 36-year-old star admits she is loving being a mother to the little one.
She said of parenthood: "I love it. It's one of the best things. What mum are you going to ask and she goes, 'Oh it sucks.' It's unbelievable. It's the biggest love you've ever felt in your life.
"It's scary and it's crazy and some days I wake up and go, 'My god, I'm a mim. I'm responsible for someone's life. What! Who gave this child to me?' "

James Marsden has been dishing out parenting advice to new father Ryan Gosling.
The 41-year-old actor, who has three children, Jack, 13, Mary, nine, and William, 22 months, from two previous relationships, has told his former 'Notebook' co-star to "enjoy every moment" of parenthood.
Speaking to Yahoo, James said: "Make it through the first year! You'll get your sleep eventually. You go through those sleep-deprived months where you don't know who you are or where you are, or what's happening. But just enjoy every second of it I guess."
However, the hunky star doesn't think Ryan, 33, needs much advice from anyone because he believes he's pretty clued up on what's to expect as a father anyway.
He explained: "He's a good man. He's very intelligent and he seems very in tune with his young self."
Ryan and his girlfriend Eva Mendes, who first started dating in 2011, welcomed their first child, daughter, Esmerelda into the world last month.
The 'Place Beyond the Pines' star has already scaled back his workload since becoming a father as he wants to spend as much time with his family as possible.
A source said previously: "His family is now his number one priority. He's accomplished everything work-wise that he had hoped and this is the next step in his life."