Movie rating guidelines for "thrusting intercourse" forced the reshoot, says director

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Kristen Stewart has said herself that shooting the sex scene for Breaking Dawn – Part 1 with Robert Pattinson didn’t feel like “a scene within a Twilight film” – and now, the anticipated movie’s director explains why.

“[There are MPAA] guidelines on thrusting intercourse,” Bill Condon told Celebuzz of the original scene shot for the PG-13 film. “[Kristen] got very into it.”

Not only is the Twilight series teen-intended, but the scene itself, “was so much more about romance than it was about hot-and-heavy action,” Condon told – so, taking out the part that would give it an ‘R’ rating “was a very kind of simple adjustment to make.”

The Summit series’s big three – Robert Pattinson, 25, Taylor Lautner, 19, and Stewart, 21 – spent Thursday morning in Hollywood, where they were honored at Grauman’s Chinese Theatre with a hand and footprint ceremony.

Accompanied by everyone’s parents, along with Stephenie Meyer and Jimmy Kimmel, the trio signed autographs, posed for personal pictures and greeted their screaming fans. But not before sticking their hands and feet into wet, black cement.

“This is so crazy for us,” Stewart told the crowd. “I’ve been so enamored by this business, Hollywood. I think this is the coolest thing I’ve done in my life. I’ve grown up thinking that. I just love this business. This is insane that I’m doing this.”

Calling the whole experience “ridiculous and amazing,” Pattinson thanked the fans, acknowledging them for “driving this franchise forward.”

With Additional Reporting by JESSICA WEDEMEYER

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