That's one way to celebrate!
Calvin Harris stripped down to his underwear on Instagram (again!) and showed off his impressive physique all to wish his manager a happy birthday.
"I love u," he captioned the photo posing in his signature Emporio Armani boxer briefs.
The British DJ turned fashion model has been enjoying his single life lately, even flaunting his abs in a Speedo earlier this summer with this boys.
We have a feeling Taylor Swift is regretting her decision!