On TV: Katharine McPhee, Ashley Tisdale, Hilary Duff

Pop acts on television this week include ‘American Idol’ season five runner-up Katharine McPhee, who visits ‘The Morning Show with Mike and Juliet’ and ‘Total Request Live’ on Monday, ‘The Early Show’ and ‘Rachael Ray’ on Tuesday, and ‘Jimmy Kimmel Live’ on Wednesday; Jennifer Lopez, who could appear on ‘TRL’ on Monday as hinted in a confusing schedule at MTV.com; Ashley Tisdale, who performs on ‘Good Morning America’ on Tuesday and ‘Live with Regis and Kelly’ on Wednesday; Miley Cyrus, who visits ‘The View’ on Wednesday and ‘TRL’ on Friday; Christina Aguilera, who visits ‘The Ellen DeGeneres Show’ on Wednesday; Colbie Caillat, who performs on ‘Last Call with Carson Daly’ on Wednesday; Fergie of the Black Eyed Peas, who visits ‘TRL’ on Wednesday; Mat Kearney, who performs on ‘The Tonight Show with Jay Leno’ on Thursday and ‘The Late Late Show with Craig Ferguson’ on Friday; No Doubt singer Gwen Stefani, who visits ‘Jimmy Kimmel Live’ on Thursday and ‘The Ellen DeGeneres Show’ on Friday; Hilary Duff, who visits ‘The View’ and ‘TRL’ on Thursday; and Lily Allen, who visits ‘TRL’ on Friday. In addition, there are rumors that Britney Spears will make another surprise visit to ‘The Late Show with David Letterman’ on Monday.