Judging by her 20.5 carat engagement ring, super luxe registry and private shopping trip at Vera Wang's NYC store, Kim Kardashian's upcoming wedding to Kris Humphries is guaranteed to be totally over-the-top.

And while the Kardashian clan is remaining tight-lipped on the details of the big day, it's not too soon to start speculating on the bride-to-be's wedding day style, starting with her hair.

PHOTOS: Kim's 10 best hairstyles

Kim, 30, who recently lightened up her raven locks, typically wears her long hair in loose waves. But, for special occasions and big red carpet events, she'll go with a sleek and sophisticated bun or a bombshell Sophia Loren-inspired updo.

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572 Votes
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284 Votes
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305 Votes
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2,035 Votes

Watercooler Poll

Which Hairstyle Should Be Kim's Wedding-Day 'Do?

Loose and sexy waves
Sleek and sophisticated bun
Glam, side-parted 'do
Bombshell, Sophia Loren-inspired updo