You know how these things go. A very important birthday is lingering on your calendar and then lo and behold it somehow gets lost in the weekend shuffle.

But that's simply no excuse when it comes to celebrating rookie Hailey Clauson's birthday! 

Yu Tsai/SI

No longer a teen now, the 20-year old is best known for her early appearances in ad campaigns with Wild Fox Couture and Forever 21; her catwalk work with designers like Diane von Furstenburg, DKNY and Oscar de la Renta; and her moves in Jay-Z's alternative video, Empire State of Mind, featuring some of the fashion industry's top models. 

And this year, the ultra-talented Hailey added one more accomplishment to her resume...SI Swimsuit model! The natural bombshell wowed in both body paint and bikinis—and without a doubt, instantly tripled her fan base. How could you not love her after those GORGEOUS photos?!

James Macari/SI

A very happy belated birthday to you, Hailey! We wish you another week's worth of celebrations...because you deserve it! 

BONUS: See some of Hailey's best moments from SI Swimsuit 2015! 


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