Happy 25th birthday, Ke$ha! New age, new hairdo. The singer tweeted this photograph yesterday with a simple message that read, “Is happening.” That could be read in tandem with the tweet right before it which said, “My next haircut?” Are those metal studs being attached to her head? Hard-core! It’s so totally different from Ke$ha’s March issue Glamour “makeunder,” but we still think it’s bad-ass. We also hope someone’s bought her her very own penis costume? Go ahead and brush your teeth with a bottle of Jack, on us, gurl! And if you need any brushing up on some party-hearty moves, then lets learn from the best.