Nothing comes between Ashley Greene and her SoBe. Nothing….zero! And to prove it, “The Twilight Saga” actress is celebrating the launch of SoBe Lifewater’s newest zero calorie flavors – Cherimoya Punch and Strawberry Dragonfruit – by posing in SoBe skinsuits for Sports Illustrated’s iconic swimsuit issue. The new spread appears exclusively in the eagerly-anticipated 2010 edition that hits newsstands Wednesday, February 10^th, but we have your official first look at the actress’ sexy photo shoot.

Designed by make-up artist Joanne Gair, the two intricately hand-painted SoBe skinsuits were inspired by the new, exotic SoBe Lifewater zero calorie flavors and take their design cues from the SoBe bottles – from the painted scales right down to SoBe’s signature lizard. Participating in the SoBe skinsuit campaign was a no brainer for Greene, a self-proclaimed SoBe fan. “Being a part of the SoBe skinsuit shoot was amazing,” said Ashley Greene, who calls the one-piece SoBe skinsuits real works of art. “It took the artist 12 hours to paint the SoBe scales on each skinsuit, but it was totally worth it. It’s an experience I’ll never forget.”

And if zero is looking good to you, you’re going to love SoBe Lifewater’s Zero Calories, Zero Inhibitions Vegas Sweepstakes. One lucky winner – and three of your very lucky friends – will win a trip to Vegas and tickets to two Sports Illustrated launch parties. The real prize? Making your friends duke it out to be your guests to party with SI models. You can enter the sweepstakes at SoBe.com today through January 29th.  Six runner-up winners will alsowin a half-year’s supply of SoBe Lifewater so they can also enjoy zero. Check out footage from Ashley’s photo shoot below and then enter for your chance to win!