Simon Cowell put on a serious face as he strolled through LAX airport in Los Angeles with his luggage and passport in hand. The music mogul sported his usual grey sweater and jeans.

Amber Le Bon looked chic in along grey tweed coat, with wet look jeans and an unbuttoned white blouse as she partied with friends at exclusive members club, Lou Lous in Mayfair, London.

Duchess Catherine of Cambridge looked seriously competitive as she participated in a yacht race against her husband, Prince William in Auckland Harbour, as part of their tour of New Zealand and Australia.

Johnny Depp sported his signature blue tinted glasses as he attend the Los Angeles premiere of his new film 'Transcendence'.

Emma Stone stunned in a floor length yellow gown, as she posed alongside her 'Amazing Spider-Man 2' co-star Andrew Garfield, at the world premiere of comic-book film in London.

Julianne Hough showed off a new pixie haircut at the The Kaleidoscope in Los Angeles where she stunned in a floor-length nude gown, which featured cut-outs to show off her toned abs.

Kate Mara stunned in a short dress embellished with sequins and beading when she attended the 'Transcendence' premiere in Los Angeles.

Jennifer Garner was all smiles as she posed for the cameras at the New York screening of 'Draft Day'. The actress opted for a striped slinky black gown, and styled her hair into loose waves.

Jessica Biel stunned in a plunge neck black gown as she arrived at the Tiffany & Co. 2014 Blue Book celebration in new York. She paired the dress with a gold belt and diamond drop necklace from the collection.

Patrick Grant looked dapper in a grey suit and blue tie, as he celebrated the reveal of Gerald Scarfe's exclusive artworks for Scarfes Bar at Rosewood London. The famed Savile Row tailor partied alongside Michael Palin and Sol Campbell.

Britain's Duchess Catherine beat her husband Prince William in two sailing races.
The couple - who are on a three-week tour of Australasia with their eight-month-old son Prince George - boarded two Team New Zealand Boats at Waitemata Harbour in Auckland this morning (11.04.14) for the contest, and the duchess was the clear winner.
Catherine raced with Team New Zealand skipper Dean Barker and William with team manager Grant Dalton, with both spending lengthy periods at the helm of their crafts.
Once back on dry land, Catherine patted her husband's shoulder and said: "I am sorry".
Rawiri Geddes, 21, a member of the Royal New Zealand Yacht Squadron youth training programme, was one of the crew members on the duchess' boat and praised her skills.
He said: "She was good, she was really good - she took charge and won both races.
"She definitely didn't want to come off the water being behind, I don't think."
However, manager Grant appeared to suggest the race was fixed for Catherine to win.
Asked what went wrong, he told the New Zealand Herald newspaper: "I was just doing what I was told, really.
"[William] was pretty happy with that because he was just doing what he was told as well".
The prince also impressed his crew with his abilities on the water.
Grant said: "He was great, he had a really good feel for it and got off the line nicely in the second race, he was going really well...he was into it."
In 2011, the couple took part in a dragon boat race in Canada, which saw William sail to victory.

Britain's Prince William says people keep offering their babies as future wives for his son.
The 31-year-old prince and his wife Duchess Catherine - who are on a three-week tour of Australasia with eight-month-old Prince George - met with families at the Royal New Zealand Air Force base in Whenuapai and he joked the little boy has already had no shortage of offers for years to come.
Karen Dreaver, who introduced William to her daughter Emily, who was born just nine days after George last July, said: "We mentioned how well-paired she and George would be in the future.
William replied, 'There have been a few babies touted to us!'
"He could see the funny side."
The prince also told Sgt. Beej Williams and his wife Leanne that life will get easier now their daughter Haley has reached five months old.
Beej told the Daily Mirror newspaper: "William mentioned that at around five months George started sleeping mostly through the night and it was easier from that point.
"He was saying you have good times ahead."
Catherine also spoke to other parents about their experiences and how they find time for one another with their children.
Melissa Tilbury, who has five-month-old daughter Madeleine with her husband Jono, the base's accountant, said: "She said when George was much younger William was away a lot in the beginning - but that you get by.
"Madeleine had been getting sleepy and Kate had some flowers to entertain her. She was really good with Madeleine.
"She spoke to us about the balance, about having the time as a couple and with the baby."