It's Kristin Cavallari's big day!

Very Cavallari's titular star turns 33 today, Jan. 5, and we're celebrating her birthday with a welcome look back at dozens of the E! personality's best and beachiest contributions to our social media feeds. With her reality series' third season premiering in just a few days (Very Cavallari returns this upcoming Thursday, Jan. 9, at 9 p.m.), a little retrospective appreciation post starring its leading lady felt necessary for more reasons than one.

After all, Kristin's work-hard, play-hard lifestyle—a true force to be reckoned with, both on- and off-screen—has not been lost on Very Cavallari's cameras these last few fabulous years. During the show's most recent season, we watched the no-nonsense CEO, bestselling author and mom of three enjoy a couple of highly deserved vacation days in Mexico with her husband Jay Cutler and a group of friends.

Behind the scenes, the Uncommon James boss has treated fans to countless sun-kissed snapshots over the years. To check out Kristin's most memorable bikini-clad photos dating back to 2015, scroll through our gallery below!

Kristin Cavallari, Bikini

Instagram

Kristin Cavallari, Instagram, Bikini

Instagram / Kristin Cavallari

Kristin Cavallari, Instagram, Bikini

Instagram / Kristin Cavallari

Kristin Cavallari, Kelly Henderson

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Kelly Henderson

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini, Mexico

Instagram

Kristin Cavallari, Bathing Suit, Mexico

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Jay Cutler

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Jay Cutler

Splash News

Kristin Cavallari, Bathing Suit, Bikini

Instagram

Kristin Cavallari, Jay Cutler, Instagram

Instagram

Wishing Kristin a happy start to 33 on her special day!

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