Minaj was one of the opening acts on Britney Spears' 2011 Femme Fatale Tour.  She and Kesha appeared on the remix of Spears' "Till the World Ends", which peaked at number-three on the Billboard Hot 100.  On August 7, 2011, Nicki experienced a "nip slip" during a live performance on Good Morning America. Minaj was criticized for wearing the low-cut shirt during her performance which led to the brief exposure of her breast on a live telecast. ABC apologized for incident.  Minaj, while interviewed on ABC's Nightline show, apologized for the incident and denied that she intentionally sought to expose herself on live television as a publicity stunt.  The incident attracted protest from the Parents Television Council.  Despite this, Minaj continued to perform at high-profile events throughout 2011; Donatella Versace invited her to perform with Prince for the introduction of a Versace collection for H&M, and she performed "Super Bass" at the 2011 Victoria's Secret Fashion Show.