This is What Kristin Cavallari Thinks Of Audrina Patridge's Swimwear Line

Kristin Cavallari is celebrating her 30th birthday in the most enviable way. Afer throwing her a surprise bash at a hot Chicago restaurant, hubby Jay Cutler whisked her away to Mexico. And you can bet the designer knows just how to dress for the sandy locale.

Kristin posted a pic of herself lounging on the beach next to a sparkling blue ocean. She's sipping fresh coconut water—out of a real coconut, natch—and wearing a cute, striped bikini top paired with a solid-black bottom. Ever the perfectly styled beach babe, Kristin topped off the look with a white fedora and a pair of oversize shades.

The former Hills star gave a shout-out to Audrina Patridge for designing the look. "I'm obsessed with my PREY swimsuit by my girl @audrinapatridge !!! So proud of you babe," Kristin sweetly wrote. BTW: The top, called the Miaou Bustier, goes for $140. And though it's hard to see which exact bottoms K-Cav is rocking in her snap, the similar Positano style goes for $110.
Audrina just launched Prey Swim back in November. According to the brand's website, the luxury line was inspired by Audrina's California upbringing, vacation destinations, and—wait for it—sharks. "Sharks are gorgeous, captivating creatures…. strong, capable, beautiful and empowering, which is my vision for our ‘Prey Swim’ girl," the site explains.

While Audrina didn't make it out to Mexico, Kristin and Jay did bring some friends along for the big birthday trip. Lucky for Kristin, her BFF and hairstylist Scotty Cunha is along for the ride. Scotty also styled Kristin for the Golden Globes, where she hit the red carpet in a gorgeous, beaded gown by bridal designer Idan Cohen.

From bridal gowns to bikinis, Kristin's already had an insanely stylish 2017.