If you don't recall Kristen and Dakota had a steamy make-out scenes in the movie, and because Dakota is only 15 years-old, there were strict rules in place about her getting kissed and groped.
Kristen said: “Well, she was 15, and I wasn’t allowed to grope her. I’m not kidding. There are major restrictions. But it’s very innocent in the movie, just a kiss.
"Of course, everyone’s talking about it like it’s a huge deal but it was so natural and impulsive. And it’s like five seconds in the movie.”
The film tells the true story of rock star Joan Jett (played by Kristen) and her all-girl band The Runaways, a teenage group from the 70s. Dakota plays the group’s singer Cherie Currie.
Next up for Kristen? A very graphic birthing scene for Breaking Dawn. Now that should be interesting!