Although singers Britney Spears (Abby) and Katy Perry (Honey) were two of the biggest guest stars, fashion designer Tim Gunn was the most welcomed guest star from the cast and crew. Nearly everyone on set wanted an autograph from him.
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Things You Didn't Know About HIMYM
FanfictionHere are some mind-blowing facts that you probably didn't know about the show How I Met Your Mother.
