Katy Perry has received numerous offers from US publishers to write a tell-all book, according to the Daily Mirror newspaper.
The 'Roar' hitmaker has reportedly been offered a deal worth millions of dollars to spill the beans on her career and personal life, including her marriage to Russell Brand, as well as her relationships with Gym Class Heroes star Travie McCoy and John Mayer.
Katy, 29, was supposedly concerned that Brand, her ex-husband, would reveal personal information about their marriage in a book of his own, with a source telling the newspaper: "Katy thought that Russell was going to tell all about what they got up to in the bedroom - but now she can breathe again.
"Her main cause of concern was there wasn't any post-divorce agreement in place, leaving him to talk about her whenever he pleases.
"However, now the boot is on the other foot because Katy is being offered deals to come out and present her version of events."
The source added: "She wasn't very kind to Russell when she spoke about him after the split and with her star at such a meteoric height, publishers expect her to be a bestseller.
"Her story and relationships are fascinating to many people in America, from her pop fans, Christian groups and star-loving book readers."
Russell filed for divorce from Katy in 2011, following 14 months of marriage.

Beyonce and Jay Z accidentally gate-crashed a wedding in Portofino, Italy over the weekend.
The world famous couple - around whom there continue to be rumours of marital strife - walked into a church to unexpectedly find they were interrupting the nuptials of the soon-to-be husband and wife.
However, fortunately for Jay and Beyonce, the newlyweds took kindly to their unexpected arrival, inviting them to pose for pictures and generally joking around with the two music superstars.
Beyonce was certainly not dressed for the occasion, as she wore a bikini top and a straw hat, which she teamed with a pair of casual sunglasses.
However, for the bride, the presence of one of the world's most recognisable faces made her day even more special, as she was seen beaming from ear to ear.
Since then, Jay and Beyonce have headed to the French Riviera, with snaps of them together suggesting they remain a happy couple.
This comes shortly after Beyonce's father Matthew Knowles claimed the pair orchestrated rumours about their marriage to "ignite" ticket sales for their tour.
Speaking on the Roula & Ryan show on radio station 104.1 KRBE in Houston, Matthew said: "From experience, there's a tour going on.
"So you sometimes have to ignite that tour. It's called a Jedi mind trick. The Jedi mind trick fools you a lot."

Kimberley Walsh is "totally in love" with her new baby son.
The former Girls Aloud singer gave birth to Bobby - her first child with long-term partner Justin Scott - last week and although she is still a bit "shell-shocked" about being a mum she is besotted with the tot.
Writing in her OK! column, Kimberley revealed: "Bobby and I are both doing well and Justin and I are totally in love with him - I can't stop staring at him! Like most new mums, I feel a bit shell-shocked, but Justin's being an amazing support and fortunately feeding is going well so far."
Kimberley admits it was a "nice surprise" to have a boy because most of her friends and family thought she was carrying a girl.
She added: "Bobby is a name Justin and I decided on a little while ago. A lot of people thought I was having a girl, so it was a nice surprise to have a boy."
Kimberley was amused when she delivered Bobby on her exact due date because she is always so punctual in her life.
The 32-year-old singer admitted: "My friends had joked that the baby would arrive on time because I'm so punctual, and he did! I went into labour last Wednesday, September 3, and gave birth at 4:52 pm the next day - September 4 - which was my due date. Justin was by my side during the birth, as we'd planned, and it was brilliant to have him there."
The new issue of OK! magazine is out now.

Nick Carter says his wife has helped him become a better person.
The Backstreet Boys star previously struggled with drug and alcohol abuse and he quit partying in 2008, shortly after he met his spouse Lauren Kitt - who he married this year - and insists she has helped him avoid falling into old habits.
He told In Touch Weekly magazine: "I'm a completely different person. I'm all about health, fitness and longevity now. My wife, Lauren, helps a lot. She's someone I have to be accountable to."
Nick admits he and Lauren have started thinking about having a baby and have a date in mind to start trying.
When asked if he's planning to have children soon, he said: "Maybe the end of next year. There's no rush."
Nick previously admitted he knew his wife was 'The One' because she hates boy bands.
The singer, who previously dated Paris Hilton, said: "Lauren is everything I was looking for. When I heard she hated boy bands, I knew she was the one.
"I want my fans to see how much I love Lauren and to know that I'm in good hands."

Joan Rivers had claimed would have considered suicide if she had got dementia.
The 81-year-old comedienne - who passed away last week following surgical complications - was adamant she would have ended her own life if she'd been diagnosed with Alzheimer's disease, which causes memory loss, confusion and disorientation, in old age.
Speaking in an interview before her death, she is quoted by The Sun newspaper as saying: "If I get Alzheimer's disease I'm out of here. I worry I'll be on stage and tell the same joke three times.
"I don't want people to say, 'She was eating her mashed potato and putting it in her eyes.' "
The 'Fashion Police' host sadly died last Thursday (04.09.14), a week after she was placed in a medically-induced coma at Mount Sinai hospital in New York, following a cardiac and respiratory arrest while undergoing a routine operation on her vocal cords at a the private Yorkville Endoscopy clinic on August 28.
An investigation into Joan's death is currently underway following an inconclusive autopsy.
Meanwhile, the comedy legend was laid to rest last Sunday (07.09.14) at the Temple Emanu-El in Manhattan in front of her friends and family.
Joan has left behind her daughter Melissa Rivers, 46 - her only child - and her grandson Cooper, 13.

Jennifer Lopez doesn't want a relationship "right now."
The 45-year-old singer - who has six-year-old twins Max and Emme with her ex-husband Marc Anthony - is enjoying being single and believes it will be beneficial for her to be on her own for a while.
Speaking on the 'Meredith Vieira Show' last night (08.09.14), she said: "I'm just being on my own. I feel like I need that right now. I've been in relationships kind of back-to-back my whole life and I just needed time.
"I need time to just chill and just know me and enjoy my kids and actually make time for other friends instead of just the relationship thing."
The 'I Luh Ya Papi' hitmaker - who split from choreographer Casper Smart in June following two-and-a-half years together - hasn't ruled out finding love again but believes everything will fall into place once she starts to take "care" of herself a bit better.
She explained: "All of a sudden, all the relationships in your life and everything starts working when you take care of yourself."
However, Jennifer - who has divorced three times - insists she's only interested in a committed relationship, rather than embark on causal sex with no strings attached.
She said previously: "I like being in a relationship. I'm not one to like wh**e around and stuff like that - that's not my thing."

Katy Perry is planning to write a tell-all book.
The 'This Is How We Do' hitmaker has reportedly been offered a number of multi-million dollar book deals from American publishers who are convinced her story will be a worldwide hit.
In addition to the breakdown of her marriage to Russell Brand - whom she split from in 2011, 14 months after they tied the knot - they're also hoping she'll spill the beans on her other high profile relationships with John Mayer and Gym Class Heroes star Travie McCoy.
They also believe stories about her childhood would make for great reading as the queen of pop was brought up in a strict Christian family and was initially trying to make it as a gospel singer before becoming a household name with hits such as 'I Kissed A Girl' and 'California Gurls'.
A source said: "Her story and relationships are fascinating to many people in America, from her pop fans, Christian groups and star-loving book readers."
Katy is reported to have been worried that Russell was going to open up about their sex life in a book of his own after he refused to agree to a gagging order in their divorce papers.
However, he's now shelved plans for a third installment of his 'My Booky Wook' autobiography series.
A source told the Daily Mirror newspaper: "Katy thought that Russell was going to tell all about what they got up to in the bedroom ... However, now the boot is on the other foot because Katy is being offered deals to come out and present her version of events.
"She wasn't very kind to Russell when she spoke about him after the split and with her star at such a meteoric height, publishers expect her to be a best seller."

Liza Minnelli has broken her back after an accident with her dogs.
The Oscar winner was at home with her pets when one of the canines excitedly jumped at the star causing her to fall and incur the serious injury.
Liza landed awkwardly and has been in a lot of pain, with doctors confirming she has broken her lower back.
She told New York Post's Page Six: "I was picking up my dogs - and they jumped. And I got twisted and fell. I thought it's nothing. But it wasn't nothing. It became something. The operation's next week.
"After an X-ray, seems I busted it and have to have it fused."
The painful accident also forced Liza to miss the funeral of her friend, Joan Rivers, over the weekend.
The daughter of 'Wizard of Oz' icon Judy Garland said: "I desperately wanted to [go] because I loved her - but I couldn't go because I can't walk. I'm in bed. Going in for surgery."
Due to a previous back injury, doctors have told the 'Cabaret' actress it will be difficult to repair the break.
She added: "I broke my lower back. Remember a few years ago I was in a wheelchair because I had trouble with my spine? They operated on it then. Well, now, again. They'll have to fuse it."
Liza will undergo surgery next week to try to repair the damage.

Justin Bieber is reportedly seeing a therapist.
The 20-year-old singer is allegedly seeing a £600-an-hour Los Angeles shrink, John Kenyon, to help control his impulsive behaviour following multiple run ins with the law - which left him facing charges of assault and drag racing - earlier this year.
A source told The Daily Star newspaper: "Kenyon's treating Justin in person, when possible, then over Skype when he's away. Sometimes they even have more than one session a day."
Despite the sought-after therapist's hectic schedule, the 'Boyfriend' hitmaker used his celebrity status to skip a lengthy waiting list of patients and is said to be enjoying the sessions.
The source added: "Kenyon's so booked up he doesn't normally take on new clients but Justin used his name to skip the three-year waiting list.
"It's too soon to tell if it's having a positive effect , but the fact that Justin has kept it up and passed the first batch of sessions speaks volumes.
"If he hates something he's not normally the kind of person to stick it out."
It is thought Justin was encouraged to participate in the sessions by his mother Pattie Mallette, 39, who has become increasingly worried that his erratic behaviour will be damaging to his career.
The source explained: "His mum Pattie suggested he should give it a go.
"She's constantly worried he'll do something that will ruin everything he's worked for. And he adores his mum so he agreed to do it for her."

Ireland Baldwin's girlfriend Angel Haze has been welcomed into her family.
The 18-year-old model's cousin Alaia Baldwin - whose father is actor Stephen Baldwin - has revealed she has embraced the star's relationship with the 23-year-old rapper and the trio often hang out together and poke fun at each other.
She said: "I've hung out with her. She's really, really awesome and she's really down to Earth.
"We all just get together and laugh and giggle and act really dumb. But that's the most fun for me."
Alaia also praised Ireland - the daughter of Hollywood stars Alec Baldwin and Kim Basinger - for the relationship and admitted she has "grown a lot as a person" over the past 12 months.
She added to New York Post's Page Six: "I'm really proud of her. The past year through everything she's been doing with modelling and relationships, she's grown a lot as a person.
"So I think now she's at a really good place.
"She's 18, growing up, and it's all kind of happened, but she's taking it really well."
Ireland and Angel are no strangers to posting selfies and the couple confirmed they were dating in June when Angel admitted she doesn't understand when people describe them as "best friends".
Angel said: "I don't know if there's like some confirm or deny thing with the way relationships work in the media, but everyone just calls us best friends, best friends for life, like we're just friends hanging out. It's funny. It's rad in some ways, it sucks in others.
"If we were two guys, it'd be insane, negatively insane with the attention. With us it's all being very positive, the media are like, 'Oh, they're so cute, they're best friends.'
"An interracial gay couple ... I mean, that's just weird for America right now. We f**k and friends don't f**k. I have never f***ed one of my friends. Once I see you in that way, it doesn't happen."

Will Young has started selling his old clothes online.
The 'Jealousy' singer has launched an online fashion website with friends, selling old items of clothing alongside a selection of new items.
Despite his estimated £12.5 million fortune, the 35-year-old star has been clearing out his wardrobe to get rid of his unwanted items on the virtual retailer, My Vintage Journey.
He tweeted: "My website http://myvintagejourney.com is live!!!! Hats in all colours, vintage and 2nd hand clothes and bits and pieces! More stuff to come (sic)"
Fans of the singer - who won the inaugural series of the ITV singing competition 'Pop Idol' in 2002 - can purchase a variety of items from vintage waistcoats to Alexander McQueen high top sneakers, with several items previously being owned by the 'Leave Right Now' crooner.
Will informed his 191,000 followers on Twitter that the most popular items are, in fact, not his unwanted garments, but knitted beanie hats which are being sold on the site for £15 each.
The website features a handwritten 'About Us' page which reads: "Here our team finds treasures. Treasures to wear, treasures to look at, treasures to give and/or keep for yourself!
"Our aim is to focus on quality. Found clothes, accessories and little gems are our passion. We all have day to day jobs and we all come together to discover stuff we want to pass on to you."

Lea Michele's boyfriend Matthew Paetz has moved into her Hollywood home.
The 'Glee' actress has reportedly invited her new beau to live with her, despite only having dated him for the last four months.
A source told TMZ that the former dating coach has moved into Lea's $1.4 million Californian home.
The couple have only been seeing each other since June, when they met on the set of Lea's music video for the single 'On My Way'.
The relationship is Lea's first since the death of boyfriend and 'Glee' co-star Cory Monteith, who tragically passed away in July 2013.
Cory's father Joe Monteith has given Lea's new romance his blessing and is happy that she is moving on with her life after the tragedy
Joe said: "She's a beautiful young woman, she's just getting to the top of her career and I don't expect her to go out and do it alone.
"She should enjoy life. She had a good time when she was with Cory, from what I understand, but life's gotta go on."
Lea, 27, had been in a relationship with Cory, 31, for 18 months when he was found dead in his hotel room from a heroin and alcohol overdose in Vancouver, Canada.