Emma Watson has revealed that she couldn't wait for her kissing scene in The Perks Of Being A Wallflower.

The ex-Harry Potter star told MTV News she wanted to do the lengthy smooch, seen in the film which is out next month, justice with her co-star Logan Lerman.

"I mean, when I read our first kiss scene, it's so epic. It's like the most beautiful scene I've ever seen written on a page," the 22-year-old said.

"And it was like, 'Oh, we're going to have to kill this one!' Like, it's so good, I wanted to do it justice. And it's so emotional and we're both so vulnerable in it, but the main thing was I get to do it with Logan.

"He makes me feel so safe, so it's going to be fine, which made it fine."

MTV News said that US actor Logan, 20, admitted that he had been worried about acting out the scene in front of the crew.

"[It was] nerve-racking," he said. "Those scenes are always hard to do when there's 15, 20 other people in the room."