Kristen Stewart has revealed that she was banned from "groping" co-star Dakota Fanning while filming an onscreen kiss for movie 'The Runaways', as the latter was just 15.

Stewart, 19, and Fanning, 16, had to share a kiss during the film, which is about the 1970s rock group, with the 'Twilight' star playing Joan Jett and the 'I Am Sam' star playing her bandmate Cherie Currie.

"She was 15, and I wasn't allowed to grope her. I'm actually not kidding, there are major restrictions that I don't remember (from) when I was younger," the Daily Star quoted Stewart as saying.

"I don't want to give anything way. It's a really passionate, hardcore scene," she added. (ANI)