(Our round-up of celeb gossip so you can keep up with your girlfriend.)

Kim Kardashian performed with the Pussycat Dolls in Vegas. (Derober)

Michael Phelps could be dating either Amanda Beard or model Lily Donaldson. (Perez Hilton)

Christina Applegate is cancer-free. (TMZ)

Heidi Montag and Spencer Pratt plan to marry on live TV. (OK! Magazine)

Isla Fisher performed a handstand while on the beach with Sacha Baron Cohen. (Ninja Dude)

Avril Lavigne may have to cancel her show in Malaysia for being too sexy. (Celeb Parasite)

Roseanne lashed out at Brad Pitt and Angelina Jolie on her blog. (Popeater)