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Lady Gaga debuts a new hair dress in Hong Kong, Tulisa is named world's sexiest woman and Rihanna goes on another holiday in this week's round-up of the best pictures from the last seven days.
Rihanna sizzles in the surf as she shows off her red-hot body in Hawaii. The singer was visiting the Island to promote her new movie Battleship, but made sure she used the visit to catch up with some friends at the beach. Picture: Splash
Lady Gaga poses in front of her fans after arriving at a hotel in Hong Kong. The 'Born This Way' singer was wearing a typically flamboyant dress made from hair as she prepared to play four 'Born This Way Ball' tour dates in the city.
Rihanna flashes a smile as she steps out in New York wearing a sylish black bomber jacket and jeans. Picture: Splash
The Saturdays' Mollie King and Rochelle Wiseman pose together for the latest issue of Cosmopolitan magazine, which is on sale now. Pictures: Harriett Johnsson
Jessie J was seen leaving the ITV studios and then at the All Stars Lanes in Bayswater bowling, in a colourful outfit. London. Picture: Goff
Justin Bieber attends the Tribeca Disruptive Innovation Awards in New York.
JLS singer Marvin Humes was pictured celebrating his Bachelor Party in Las Vegas. After enjoying a dinner with the rest of the stag party, the 'She Makes Me Wanna' singer was handcuffed to the rapper 5Cent. Picture: Flynett
Rihanna attends the Battleship photo call at the Battleship Missouri Memorial in Pearl Harbor, Hawaii. The singer was all smiles and used her time in the sun to catch up with friends.
After spending her afternoon at four hours of dance rehearsals, Jennifer Lopez and boyfriend Casper Smart grab lunch together at Caffe Roma. The 'On The Floor' star announced a joint tour with Enrique Iglesias this week. Picture: Barcroft Media
Tulisa Contostavlos performed her first ever solo gig at G-A-Y Heaven in London. The singer's performance came just hours before her first solo single 'Young' went straight to number one on the Vodafone Big Top 40.
Rihanna throws a peace sign as she hits the beaches of Hawaii during a break from promoting her new movie Battleship. Picture: Splash
Kelly Clarkson shoots scenes for her next music video 'Dark Side' in East Los Angeles. The singer is among the artists set to perform at Capital FM's Summertime Ball in London next month. Picture: Goff Photos
JLS boys were all in good spirits as they arrived with a group of friends in Las Vegas for Marvin Humes' stag do. The entire stag party wore the same t-shirts featuring the message DYDTOUR. Picture: Splash
Cheryl Cole appears on the cover of GQ magazine. The Girls Aloud star, who is promoting her new solo single 'Call My Name', spoke about her relationship with Simon Cowell and plans for the future during the interview. Picture: Mariano Vivanco
Rihanna went make up-free as she exited the Gansevoort hotel in Manhattan. Picture: Wenn
Chris Brown was all smiles as he launched his Dum English toy collection in Los Angeles earlier this week. The 'Turn Up The Music' star has teamed up with Ron English on the project.
Jennifer Lopez appears at a special press event to announce details of her world tour with Enrique Iglesias. The pair will travel the world together later this year in what will be the singer's first world outing.
Carly Rae Jepsen poses for photographs in Sydney where she was promoting her new single 'Call Me Maybe'.
Cover Drive's Amanda Reifer sings the band's new single 'Sparks' during a promotional appearance at G-A-Y in London.
Tulisa jumps for joy after being named FHM's sexiest woman in the world. The singer beat the likes of Cheryl Cole, Rihanna and model Rosie Huntington Whitley to the annual crown. Picture: FHM
Tulisa Contostavlos wows in an asymmetric dress as a she arrives at the FHM 100 Sexiest Women in the World 2012 party in London. The 'Young' star was joined at the event by her new boyfriend.
Professor Green and Millie Mackintosh arrive for the FHM 100 Sexiest Women in the World Party.
The Saturdays' Frankie Sandford and her footballer boyfriend Wayne Bridge enjoy a meal together at Sketch restaurant in London. Picture: Xpoure
Enrique Iglesias attends a press conference to announce his upcoming tour with Jennifer Lopez.
Pixie Lott and Oliver Cheshire attend the Gallo Film Club Launch Party at the Rose club in London.
Rihanna was seen leaving a studio and arriving back at her hotel in New York this week. The 'You Da One' star thrilled in a pair of very on trend printed shorts. Picture: Splash
Tulisa Contostavlos and Jack O'Connell appeared in public together for the first time since the N-Dub star confirmed that she was in a relationship. The pair enjoyed a night on the town after Tulisa was named the sexiest woman in the world by FHM.
Will.i.am attends an Innovation Night at the Royal College of Art in London. The Voice judge posed for pictures at the event wearing a stylish grey suit and sunglasses.
Lady Gaga wore a pair of towering heals as she left the Ritz Carlton Hotel in Hong Kong the morning after playing her first 'Born This Way Ball' tour date in the city.
Ke$ha appears on the front cover of V magazine as she revealed that she would like to collaborate with Justin Bieber and the Rolling Stones guitarist Keith Richards. Pictures: Inez van Lamsweerde & Vinoodh Matadin
Chris Martin jumps for joy as the band take to the stage for the results show of this week's American Idol series.
The JLS boys hang out at the pool and show off their toned physiques at the Encore, in Las Vegas, Nevada as they celebrate the stag do of band mate Marvin Humes.