July 23 was Paul Wesley's (Stefan) 31st birthday, and his Vampire Diaries co-stars were on hand to celebrate. It looks like they had so much fun! Check out this video Nina Dobrev (Elena) put on her Instagram. "@paulwesley 's birthday TVD style..!! Shinanigans shinanigans [sic]! Zach trying- juilie denying! Hahah :P JK," Nina wrote. Oh, Zach Roerig (Matt)! You dog!