Wilson, 37, was speaking with a Sky News reporter at the Tuesday premiere when a woman shouted his name then lifted her shirt when he looked her way.
"Wow, I kinda lost my train of thought with that one," Wilson said.
Rumors of Wilson's alleged romance with his co-star Kate Hudson also came up on the red carpet, Sky News said.
Hudson recently split from her husband, Black Crowes lead singer Chris Robinson.
"I've been out of the country for a year, so I don't know about that part at all," their "Dupree" co-star, Michael Douglas, said. "I just know that Kate has split up with her husband, which is very sad."