The Office's Ellie Kemper to Appear on How I Met Your Mother as a Guest at Barney's Wedding!
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Ellie Kemper RSVPs to Barney Stinson's wedding. The Office alum has officially booked a guest
role on the upcoming 9th and final season of How I Met Your Mother. According to TV
Line, Kemper will be joining the cast as Cassie, one of the most "attractive, available, yet
unfortunate guests at Barney and Robin's wedding -- something that Ted will learn the hard
way. Don't miss HIMYM's final season when it kicks off September 23rd on CBS, and stick
with us at Celebified for more of the latest TV buzz.
