The pop princess stepped on to the red carpet in Hollywood wearing a beautiful embroidered Temperley London gown with a floral headpiece perched on top of her new dark purple locks.
This look would have been perfection if Katy kept that one strap up on her left shoulder all night. At one point it looked as if she was about to pop out!
And what's up with that scratch on your left boob, gurl? Did Kitty Purry not approve?
[Image via Adriana M Barraza/WENN.]