And you wouldn't believe it... but his Twilight co-star Kristen Stewart (aka Bella Swan) turned up!
Celebrity hairstylist CJ Romero posted the above selfie, captioned, "Damn K looks sexy. T is a pretty little liar."
In another photo from the event, you can see the everyone who attended Taylor's party. "Thank you @taydome for the best birthday EVER," Taylor (Lautner) wrote. "I’ve never been more surprised in my life. ❤️🎂❤️"
Cute, but where's #TeamEdward (Robert Pattinson)??