Newly Single Hayden Panettiere is really enjoying the free single life! After her split with Heroes co-star Milo Ventimiglia, she has been out and about all over! This week-end she was in Hawaii with a girl friend to attend the grand re-opening of the Royal Hawaiian Hotel in Waikiki, Oahu. Looking so fit, fresh and lovely, we don't think Hayden will be alone for long though! She was even spotted having dinner with her ex Stephen Colletti the other night, the guy she dated before Milo!