Megan Fox has revealed she was “terrified” at the prospect of having to film a lesbian kissing scene with co-star Amanda Seyfried.

Despite her fondness for stripping off for raunchy photo shoots and talking about her rampant sex life, the Transformers star insists that neither actress wanted to pucker up for their new horror flick Jennifer's Body.

And she said it was made even worse because they had to do it in a room full of male crew.

"It's really, really awkward," she told chat show host Conan O'Brien.

"Any time you do a kissing scene or a love scene it's awkward but especially in that one because neither one of us wanted to be doing it and we were both terrified.

"But when you do scenes like that it's not at all sexy or sensual."

Megan discusses her well-hidden self-esteem issues in a new interview.

She says: "I'm really insecure about everything. I see what I look like, but there are things that I like and things that I dislike.

“My hair is good. The colour of my eyes is good, obviously. I'm too short. But overall, I'm not super excited about the whole thing.”

She adds: "I never think I'm worthy of anything... I have a sick feeling of being mocked all the time. I have a lot of self-loathing."