It’s a material world and I’m a material girl! Actually, I’m more of a material boy, but I don’t think it will matter either way at the eighth annual Madonnathon, a gathering held every August 16 at the B.B. King Blues Club in Times Square. Madonnathon attracts hordes of the Madonna Louise Ciccone faithful, who celebrate the superstar’s birthday (this year she turns 51) by dressing up in her various guises, dancing around like crazed hyenas and singing all her biggest hits. “It gets bigger and better every year . . . featuring LIVE performances by some of New York City’s most talented musicians, collaborating to bring you the very best of Madonna’s huge repertoire,” reads blurb from the official Madonnathon site. Want a better idea of what it all looks like? Click here to check out pictures from last year’s show.