 During the Back to Basics Tour in 2006, Aguilera performed in a stole made of fur designed by Roberto Cavalli, unaware that it was made from real fur of a white fox.After receiving a video about the treatment of foxes from PETA vice president Dan Mathews, Aguilera replaced it with a faux-fur stole, further stating that she was "very upset" because she "only ever wears fake fur".Aguilera's costumes from "Burlesque" were featured in the Fashion Institute of Design & Merchandising's Art of Motion Picture Costume Design exhibition.