A day before the release of No Boys Allowed, Hilson performed the song at Billboard's first live Tastemakers event in New York City on December 20. On January 4, 2011, Hilson gave a Motown-themed performance of ``Pretty Girl Rock'' on the Late Show with David Letterman, by paying tribute to Diana Ross and The Supremes with _her_ two female back-up singers. <sep>, Pronoun: her