Anna Camp is about to have another reason to wear high heels.

The actress - who made quite the mark with this footwear on True Blood Season 6 - has been cast on an episode of How I Met Your Mother Season 9.

According to TV Line, the busy star will appear as a guest at Barney and Robin's wedding, portraying a character named Cassie who Ted soon learns is both available... and troubled.

The role had originally gone to Ellie Kemper, but the former Office star was forced to bow out due to a scheduling conflict.

How I Met Your Mother returns for a one-hour premiere on Monday, September 23.

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