Celebrity Blake Lively Debuts a Terrifying New Trailer for The Shallows By Brandi Fowler Brandi Fowler Instagram Website In addition to her extensive fashion, lifestyle, and beauty coverage for InStyle, Brandi has worked as a writer and editor for E! Online, a fashion and lifestyle writer for Hello! US, an editor/on-camera host for AOL, contributing writer and red carpet correspondent for Variety and Cosmopolitan, and has also served as the Hollywood correspondent for Australia's 9News' TheFIX. Her editorial features can also be found on Vitruvi, MTV News, Madame Noire, Hello Beautiful and more covering fashion, beauty, lifestyle, travel, and entertainment news. Her articles have been syndicated by the likes of Health, Marie Claire, Essence, Shape, Yahoo!, People, and more. InStyle's editorial guidelines Updated on June 7, 2016 @ 07:15PM Pin Share Tweet Email Photo: Samir Hussein/WireImage The debut of Blake Lively's upcoming thriller flick is just weeks away! Before The Shallows hits theaters later this month, though, the actress is giving fans a sneak peek at more of what they can expect via a new trailer she posted on her Instagram page Tuesday. "SOUND UPP!!! Full video in bio!! "Assume responsibility, know where you are going and make your own decisions." #TheShallows #SaveAShark," she captioned the clip. In it, Lively flashes a yellow bikini top, zips up her rashguard, grabs her surfboard and hits the waves for a day of surfing in a tropical destination. Things take a turn when she catches a huge wave—and the attention of a massive great white shark. A Disney Princess Did NOT Inspire Blake Lively's Stunning Cannes Looks—Here's Who Did While this is just the latest trailer from The Shallows that Sony Pictures Entertainment has dropped. Lively has been promoting the film for quite some time now, even appearing at Cannes last month to help push the film. In one clip she posted on the 'gram, the mom can be seen striking a pose at the famed film festival as a faux shark fin moves around behind her in the ocean. "Soooo ...no one is concerned that there's a giant shark fin swimming behind me???!! Hmm. #TheShallows," she jokingly wrote alongside it. The Shallows centers on a surfer named Nancy (Lively) who is attacked by a great white and struggles to make it back to safety before it's too late. The thriller flick hits theaters June 29.