'Breaking Dawn' Wedding Is 'Ceremonial,' Kristen Stewart Says

'Nobody saw it until I walked out,' actress tells MTV News of bridal gown.

Twilighters who caught the premiere of an exclusive new clip from "Breaking Dawn- Part 1" got a taste of all the emotions coursing through the lives of Bella and her family (both the Swans and the Cullens) as she readies herself to marry her immortal beloved, Edward.

On Thursday, Kristen Stewart, Robert Pattinson and Taylor Lautner introduced the clip and stuck around for a lengthy Q&A after the clip's debut, during which they opened up about all the highly anticipated moments from the November 18 film.

During the "MTV First" live stream, the "Breaking Dawn" trio took a video question from Tiffany, who wanted to know if Stewart kept her Carolina Herrera creation a secret from her fellow castmates until she walked down the aisle.

"Nobody saw it until I walked out, which made me so ... " Stewart said before trailing off. "It wasn't about the dress; it was just everything involved. I was like, ugh, so very the center of attention at that very moment."

The moment she's referring to was an emotional one for the cast, who had spent three movies working up to the long-awaited nuptials between Bella and Edward. While it's believed the groom shouldn't see the bride before the wedding, Pattinson broke with tradition, much to Stewart's dismay. "He saw it before," she recalled. "And I was like, 'No, you can't.' It did feel, like, very sort of realistically ceremonial."

It was so "realistically ceremonial" that Stewart couldn't help but feel some real emotions the day they shot the buzzed-about scene. "It was very, very emotional for me," Stewart said. "I don't know about these guys."

Stick with MTV News for much more from our exclusive Q&A with Kristen Stewart, Robert Pattinson and Taylor Lautner!

Check out everything we've got on "The Twilight Saga: Breaking Dawn - Part 1."

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