Well, she won't be the mother. That much we know.

But Arianna Huffington - the professional blogger who created TheHuffingtonPost.com - will guest star on the May 10 episode of How I Met Your Mother.

Playing herself, Huffington will show up at a New York Party attended by Ted, Barney and Marshall. She follows in the hotter recent footsteps of Carrie Underwood and Jennifer Lopez.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.