Keira Knightley and Carey Mulligan's Steamy Smooch

They’re both super hot celebrities in their own right, and Keira Knightley and Carey Mulligan are teaming up in a new movie, including a sexy steamy moment.

The “Pirates of the Caribbean” babe and the “Wall Street: Money Never Sleeps” chick star together in “Never Let Me Go,” a film about two friends who end up sharing a kiss in a moment of passion.

Carey told press that working with Keira in 2005’s “Pride and Prejudice” helped her develop her acting style in a major way.

“I was a real tomboy until was 15 – I didn't have my first kiss until a month away from being 16. So I just copied everything Keira did for weeks. She is still amazing to me.”

“That was a mad hippie summer – a party every weekend, lots of jumping naked into the lake. And I ate everything; my face ballooned. I realized catering is a very dangerous thing!”