Carrie's "Mother" of a Night

Don’t forget that tonight is the night for Carrie Underwood’s appearance on “How I Met Your Mother.”

She’s playing Tiffany, Ted’s (Josh Radnor) lastest flame. But no, she is not the mother. Or at least I don’t think she is…

“How I Met Your Mother” airs tonight (Monday, March 1st) at 8 on CBS…

Photo Credit: Richard Foreman/CBS