The stars came out to play and perform last night -- as Kelly Osbourne, Mya, and Carmen Electra joined the Pussycat Dolls at The Viper Room in West Hollywood.
The show, presented by Bing, marked the Dolls' last night of their summer long Sunset Strip Summer Concert Series.
Kim Kardashian (who's performed with PCD before), Eva Longoria and Kelly's mom Sharon Osbourne all showed to show their support.
Check out the performance pics and more from the gorgeous gals in the video above!
