First lady makes appearance on 'iCarly'

First lady Michelle Obama speaks at Brock Elementary School in Slidell, La., Wednesday, Sept. 8, 2010, where she promoted her "Let's Move!" campaign for healthy lifestyles among children and a solution to the childhood obesity epidemic within a generation. (AP Photo/Patrick Semansky)

January 5, 2012 7:46:36 AM PST
Teen star Miranda Cosgrove says she doesn't usually get nervous about taping episodes of her Nickelodeon comedy, "iCarly," but that changed when first lady Michelle Obama taped an appearance on the show.