On February 13, 2012, "Part of Me" received an official release as the lead single from the album's re-release. Perry had planned all along to release the song on the deluxe edition of the album rather than the original, as it did not fit that album's composition. On February 11, two days before its worldwide premiere, the song was leaked for a second time with a reworked production and slightly changed lyrics. "Part of Me" was released to most iTunes stores worldwide on February 18, 2012, following her performance at the 54th Grammy Awards. In the United States, "Part of Me" was sent to contemporary radio playlists on February 21, 2012. The song was released in England, Scotland, Wales, France, and Ireland on March 18, 2012 under the digital download and CD single formats. Perry revealed via Twitter that all profits raised from the sales of the single would be donated to MusiCares. The photograph by Mary Ellen Matthews that was used on the single cover was part of a photographic essay for Perry's appearance in episode 710 of the television program "Saturday Night Live".