Britney Spears will return to the CBS sitcom How I Met Your Mother to reprise the role she played in the March 24 episode, People.com reported. Both the singer and struggling sitcom (CBS has not yet renewed the show for a fourth season) were happy with Spears' first appearance when more than 10.6 million tuned in to watch the episode. Despite speaking out against stunt casting after the original Spears episode aired, cast member Neil Patrick Harris said he would be happy for the singer to return to the show. No word yet on what it's doing for Spears' image.