Jessie J is pretty much the epitome of cool. Not only can the girl sing (and we mean sing), she also manages to effortlessly go from Hollywood glam to rocker chick in a matter of minutes. Or maybe hours. Plus, she recently shaved her head for charity. How many celebrities would give up their locks to fight poverty and social injustice? We’re thinking not too many. Oh, and remember when she performed with a broken leg? Yeah, she totally rocks our socks off. So happy 25th birthday, Jessie J! We’ll leave the birthday tune to you.
Photos via Pinterest.