On TV: Ashlee Simpson, Raven Symone, Hilary Duff

Pop acts on television this week include Ashlee Simpson, who visits ‘Live with Regis and Kelly’ on Monday; Jesse McCartney, who visits ‘Total Request Live’ on Monday for the TRL Awards; Raven Symone, who visits ‘Live with Regis and Kelly’ on Tuesday; No Doubt singer Gwen Stefani, Hilary Duff and Enrique Iglesias, who surprise their biggest fans on ‘Oprah’ on Tuesday; Duff again makes a televised appearance on Wednesday’s ‘Live with Regis and Kelly’ along with her sister Haylie Duff; and look for Jennifer Lopez’s biggest, littlest fan contest winner on Thursday’s ‘Today’ — but no word if that includes a visit by Lopez herself.