10/16/2010 08:54 am ET | Updated May 25, 2011

Kim Kardashian Wears Tiny Dress, Wrestles With Khloe (PHOTOS)

Kim Kardashian turns 30 this Thursday, and she had her Las Vegas party Friday night at Tao.

"Are you Ready Vegas!? Who's coming to my @fallout Birthday Party TONIGHT @taolasvegas ?" she tweeted. "The festivities have started!!!! One white russian coming up! Hmmm who can I drunk dial tonight?"

Later Kim tweeted "Omg @khloekardashian is attacking me!!!!" along with this photo of her grappling with her younger sister on the floor.