Sienna Miller "made out" with a monkey on a recent photo shoot. The Factory Girl actress, who had to pose with the chimp for an upcoming issue of Esquire magazine, got an unexpected surprise when she tried to coax him into giving her a peck on the lips.

She said: "To make the monkey respond, you're meant to blow at its mouth so it'll kiss you. But it stuck its tongue out! So, I sort of made out with a monkey!"

Sienna admits she didn't enjoy her simian smooch, saying: "It was a sweet monkey but, no, that's too much."

Unfortunately for the 25-year-old actress the amorous monkey still had one more surprise for her on the day. Before the shoot had finished the excited animal urinated all over her back.