Katie Holmes is the Slutty Pumpkin in "How I Met Your Mother"

Actress Katie Holmes is set to appear as guest star on the special Halloween episode of the CBS hit series "How I Met Your Mother"!

Rachel Bilson Returns to "How I Met Your Mother" on September

Actress Rachel Bilson will be returning on Ted Mosby (Josh Radnor) life on CBS’ "How I Met Your Mother".

Rachel will be reprising her role as Cindy and she will appear in the sixth season premiere, airing on September 20.

[Photo courtesy by wenn.com - Bryan Bedder/Getty Images]