Office Star Ellie Kemper Joining How I Met Your Mother

Access Hollywood
Ellie Kemper arrives at the 19th Annual Screen Actors Guild Awards held at The Shrine Auditorium on January 27, 2013 in Los Angeles (Photo by Getty Images) --

Ellie Kemper is headed to a new small screen series.

The former "Office" star has signed on to appear on CBS' "How I Met Your Mother," according to TV Line.

The actress will play Cassie, a character "HIMYM" co-creators Carter Bays and Craig Thomas describe as "one of the most attractive, available, and -- as Ted discovers -- unfortunate guests at Barney and Robin's wedding," the website reported.

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So far, Ellie is only slated to appear in one episode during the show's final season.

Additionally, "The View" co-host Sherri Shepherd will also make a "HIMYM" appearance.

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"How I Met Your Mother" Season 9 premieres on September 23 at 8 PM on CBS.

-- Erin O'Sullivan

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