TRAILER: Blake Lively fights CGI shark in The Shallows

SHE battled high-school drama and ice queens on Gossip Girl, now blonde bombshell Blake Lively faces off against a new predator.

Lively plays Nancy, a surfer who becomes stranded after becoming the target of a Great White Shark.

The film -- shot entirely on the Gold Coast -- follows her battle to survive the CGI monster as she attempts to reach safety on a nearby beach.

Expect lots of close-ups of a soaked, bikini-clad Lively and bucketloads of ominous music.

So far it's unclear if the ocean-bound killer is as scary as her former enemies from the Upper East Side.