Exclusive Photos! Judy McLane & the Cast Celebrate 13 Disco Dancing Years of Mamma Mia! on Broadway

Get out those dancing shoes, because the hit Broadway production of Mamma Mia! is officially 13 years old. The cast of the jukebox musical, which first opened in 1999 in the West End before transferring to the Great White Way in 2001, had a starry party at Pigalle on October 19, 2014 to celebrate. Click for photos!