We've heard whispers that Zac Posen is poised to design Kristen Stewart's wedding gown for the latest Twilight instalment, Breaking Dawn, Part One. The US designer is known for his for his flirty and feminine gowns (check out the frock he designed for Coco Rocha's wedding), and we can't wait to see the concoction he whips up for Kristen Stewart to wear! We've been plagued for-ever (ok, well at least since reading the book) with who would be designing for the much anticipated Bella Swan/Edward Cullen nuptials, and we think Zac's a top choice. Now the question begs, what WILL Kristen wear? We think Zac's pastel filled Resort '11 collection is perfectly wedding friendly, but is it vampire appropriate? We'll have to wait and see.