Kristen Stewart was not allowed to “grope” Dakota Fanning in their new movie.

The two Twilight actresses star alongside one another in latest film The Runaways and in one scene the girls lock lips – but Stewart, 19, was told to keep her hands off her 15-year-old co-star.

“She was 15, and I wasn’t allowed to grope her,” Stewart explained to Access Hollywood. “I’m actually not kidding, there are major restrictions that I don’t remember from when I was younger.”

Kristen – who is best known for playing Bella Swan in the Twilight series – went on to say that despite kissing another girl, she didn’t find the scene a “big deal” at all.

“I don’t want to give anything way. It’s a really passionate, hardcore scene.” She joked. “No, it’s just a kiss. It’s not really a big deal.”