Madonna has revealed that the vintage costumes she wore during her surprise appearance at Coachella, which have apparently gone missing. The Queen of Pop announced the theft on her Instagram Story and reflected on her return to the festival 20 years after her first Stateside performance of her 2005 LP, Confessions on a Dance Floor. Other archival items from the same era were also missing. Madonna's appearance coincided with the release of "I Feel So Free," the lead single from her forthcoming Confessions II, which arrives on July 3 as the official sequel to her 2005 album.