Caught in the Act!
08/12/2011 AT 06:00 AM EDT
Katy Perry hosted her own private party at West Hollywood's Trousdale Lounge for her close friends and family, according to an insider. The singer was joined by Swedish singer Robyn, who is opening for Perry on her current tour, and the group danced and popped bottles of champagne all night. Missing, however, from the bash: her hubby Russell Brand who's filming Rock of Ages.
Nicole Scherzinger and her former Dancing with the Stars partner Derek Hough danced the night away together at Tru Hollywood. At one point, the singer hopped on the mic and serenaded the crowd with "Right There." Also in attendance: Justin Timberlake, celebrating a producer pal's birthday at the club, and partying late into the night.
Geri Halliwell had a sweet shopping date with daughter Bluebell Madonna in Cannes, France. The ladies stopped by Tartine et Chocolat before hitting a luggage shop and a shoe store, where they both tried on matching slip-on boots. Bluebell left wearing her pair!
Mickey Rourke worked up a sweat on the StairMaster at Equinox Soho in New York – but the actor wasn't dressed to sweat. He was wearing a black wool cap and an olive-colored shirt. Rourke worked on his abs and did stretches with a friend.
By JENNIFER GARCIA, KIM PEIFFER and JESSICA WEDEMEYER