updated 05/06/2011 AT 10:00 AM ET
•originally published 05/06/2011 AT 11:15 AM ET
The actor – who turns 50 on Friday – had a early celebration and dinner at the Beverly Hills hotspot with girlfriend Elisabetta Canalis and a ton of other celebrities.
Current Dancing with the Stars contestant Kirstie Alley and author Jackie Collins both caught Clooney in action – and live Tweeted his birthday dinner. Wrote Alley: “Jeez… I’m having dinner and I swear this is the most star studded restaurant I’ve ever been in!!… Impressive!!!”
Collins was equally impressed with her famous fellow diners. “Fun dinner at CHOWS. with Kathy Griffin. Spotted George Clooney & beautiful gf Elizabetta. Also Kirsti Alley looking major svelte,” she posted.
“Kirsti was with Kelly Preston, & wandering around were Ray Romano & Brad Garret. Quite a star studded night.”
Replied Alley: “u a bad ass Jackie… Great seeing u tonight.. Were we surrounded by beautiful men or what?? Mr. Chows it is every nite xxo.”
And Alley didn’t leave the restaurant empty-handed. “Happy birthday George Clooney,” she later Tweeted. “Great to see u.. Better to hug u.”