Machine Head frontman Robb Flynn celebrated his 46th birthday by dressing up as a prom queen for a night out in New Jersey. The rocker turned 46 on Friday (19Jul13) so a prom-themed party was held in his honour on the New Jersey leg of the Rockstar Energy Drink Mayhem Festival, which featured his band on the bill along with Rob Zombie, Mastodon and Five Finger Death Punch. Flynn got into the party spirit by donning drag for the birthday bash, turning up in a pink ball gown complete with a fake pearl necklace and crown, as well as heavy blue eye make-up. He documented the festivities by posting pictures on his Instagram.com page, writing, "My goal was the 70-year-old hooker from the movie Barfly. Success!!!"