Perry made a live appearance at "Hope For Haiti Now" playing piano while Aguilera premiered a stripped-down version of their song "Lift Me Up." She also made guest appearances on Hole's "Nobody's Daughter" tour and on a concert of the Perry-signed band Little Fish in London. In May 2010, Perry again hosted the "Evening with Women" at L.A.'s Gay and Lesbian Centre, where she reunited with P!nk for a live duet of Perry's song "What's Up?"