09/10/2011 AT 10:15 AM ET
Stacy Keibler could sum up what she likes about George Clooney in one word.
“Everything!” she told PEOPLE on Friday night at the premiere of Clooney’s film The Ides of March at the Toronto International Film Festival.
Clooney, 50, and Keibler, 31, are taking their budding romance semi-public at the event – they didn’t walk the red carpet together but they did party with pals afterwards at Deq lounge at the Ritz-Carlton, the second night they were spotted together there.
After fighting through a throng of fans, they made their way to the VIP area after midnight and throughout the night they laughed and chatted both with each other and friends.
“They have good chemistry, and she can hold her own with the boys,” says an onlooker. “They both can equally be the life of the party.”
They left holding hands early Saturday morning.