At the Premiere Icon party on Tuesday night, Charlize Theron stunned onlookers by kissing actress Shirley MacLaine’s butt.

The Oscar-winning beauty, has found a new best friend in Shirley MacLaine after kissing the movie veteran’s bottom during a recent tribute evening.

Charlize Theron was so overwhelmed at meeting the movie star that she couldn’t resist jumping off the stage, walking into the audience and planting her lips on Shirley’s backside. While paying tribute to the actress, Charlize announced, “Shirley, you’re my idol! To prove it, I’m going to kiss you’re a** literally.”

After receiving the blonde beauty’s kiss, Shirley quipped, “Thanks, honey. That’s the best I had all year!” Shirley, 71, later admitted she thought Charlize was great fun and said she would love to spend a raucous night out with her. She said, “I’ve got to get to know her better. I should get drunk with her.”

Charlize, who was paid homage with Lindsay Lohan and Rachel Weisz, later admitted she was ‘high’ on strong painkillers she is taking for a neck injury she sustained while filming new action movie ‘Aeon Flux’.

She explained, “It was a combination of my painkillers and the fact that everybody was paying tribute to this incredible woman, this incredible actress, so I had to go to the physical aspect of kissing her a**.”