Kate Upton was recently named Maxim's sexiest woman in the world, which you already know. Did you know that the world's sexiest woman also had a birthday recently? Of course, you did! You probably also wished her a happy birthday on Instagram which is why Kate wanted to repay the favor and give her adoring fans something skintacularin return. She teased us with a hefty amount of sideboob as she celebrated her birthday in her birthday suit. She's never looked better!

She's very comfortable in her birthday suit. She's shown it off plenty of times in the past in photoshoots that had her taking off her top and posing nude on the beach. It's only appropriate that we celebrate the birthday girl in all her past splendor!

Kate Upton Wants to Thank You For Wishing Her a Happy Boob-Day

Happy birthday, Kate! We're happy that you're another year older and another year sexier. Keep showing off your young perky honkers in every way you see fit - and we love seeing you so fit and fabulous!

Kate Upton Wants to Thank You For Wishing Her a Happy Boob-Day