Simpson performed the song on "The Rosie O'Donnell Show" on May 11, 2001. On June 1, she performed at the summer concert Zootopia, organized by Radio Z100. Six days later, she performed on "The Tonight Show with Jay Leno". On June 11, she appeared on an episode of MuchMusic in Canada, and sang "Irresistible". On June 16, she performed it at Wango Tango, an annual all-day concert organized by KIIS-FM, in California. On July 4, 2001, it was performed at the "Macy's 4th of July Fireworks Spectacular", for the celebration of Independence Day. In December 2001, Simpson joined the cast of KBKS-FM's Jingle Bell Bash in Seattle.