Robert Pattinson describes the 'Ghost'-style sex scene in 'Breaking Dawn -- Part 2'

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The cast of "The Twilight Saga: Breaking Dawn -- Part 2" took a trip down memory lane Thursday (Nov. 1) as they kicked off the first day of the movie's Los Angeles press junket.

Kristen Stewart, Robert Pattinson and Taylor Lautner all took part in a lengthy interview with MTV News where they talked about everything from their first interviews at the MTV Movie Awards in 2008 to Stewart and Pattinson's slightly creepy Halloween costumes this year. They also, of course, talked about the final "Twilight Saga" film -- or, namely, the sex scenes in it.

"I haven't seen it yet, so I don't know, but I imagine it's quite like the scene where they're doing pottery in 'Ghost,'" Pattinson teases.

Meanwhile, Pattinson tells ET that he felt a "lot more free" when he made the first "Twilight" film, while now he feels like he's "part of a machine."

The on-again Stewart and Pattinson discussed becoming parents in the movie during the "Breaking Dawn -- Part 2" press conferences that were held yesterday. Apparently playing a mother onscreen kicked up Stewart's maternal instincts offscreen.

"I have a great relationship with my mom, and she can be a bit feral when it comes to being a mom," Stewart said. "I can't wait to be a mom. But I can wait."

"Breaking Dawn -- Part 2" hits theaters on Nov. 16.

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