Madonna donned thigh-high boots and a printed mini-dress at the recent opening of Hard Candy Fitness, her new gym in Mexico City.
The center, the 52-year-old singer's first, is one of several set to open around the world as part of collaboration with the creator of the gym franchise 24 Hour Fitness, which maintains more than 420 clubs worldwide.
Madonna personally maintains a strict fitness and health regime and who years ago famously gave pop artist Justin Timberlake a vitamin B12 injection in his butt during a recording session.
Madonna's gyms include cardiovascular equipment with personal viewing screens, more than 60 pieces of strength equipment and free weights. They will also offer classes for Zumba, Latin moves, Cardio Kickboxing and more and will include a bike studio, juice bars and cafes.