Happy Birthday, Holly Madison!

Ever since she was invited to move into the Playboy Mansion and become one of Hugh Hefner's seven girlfriends in August 2001, Holly Madison has become an institution at the men's magazine, both in print and on TV - and to the delight of many!

She's risen to fame along with Kendra Wilkinson and Bridget Marquardt, and although she broke up with Hef - Criss Angel of all people is now seeing Holly Madison naked - we'd like to wish his former #1 girlfriend a happy 30th birthday!

Click to enlarge some of these classic Holly Madison photos ...

Other celebrity birthdays today include Corey Haim, Shelley Malil and legendary All My Children actress / recent Dancing with the Stars contestant Susan Lucci. Woohoo!