Kate's Drunken 21 Love Scene

Kate Bosworth had to get tipsy to pluck up the courage to do the sex scene in her latest movie, 21.

In fact, the 25-year-old has told People magazine in the US that she was so drunk she can’t actually remember filming it.

Kate explained: "We were both so drunk."

"My co-star Jim and I became such good friends, we decided to have a couple of drinks, loosen up and go for it."

Jim Surgess - who plays the lead in movie about six MIT students who took Vegas for millions - has similarly fuzzy recollections.

He added: "We were on Grey Goose, I think."

"It was brilliant for about half and an hour. As we continued to drink… it just became sloppy and messy. I couldn't stand up at one point."