While choosing a statement piece like the blazer is high on his list of holiday party do's, one thing he really doesn't recommend is hosting a party without keeping an appropriate outfit in mind. Sweats, he said, are a real mood-killer.

\"I would dress up!\" he said. \"For me it's a sign you care.\"

View this post on Instagram

A post shared by @timgunn on Oct 12, 2017 at 11:22am PDT

\"PHOTO:
STOCK PHOTO/Getty Images
PHOTO: A woman wearing a tartan skirt is pictured in this undated stock photo.
>

As for any trends he's seeing that people can jump on, Gunn is all about metals like silver, gold, and copper and more, especially for accessories. As for clothing? Try tartan, he said.

\"It's a classic, but on trend, at least on the runway,\" he said.

\"PHOTO:
STOCK/Getty Images
PHOTO: This stock photo depicts a woman at a party holding wine glasses.
>

But most importantly, Gunn recommends having fun with fashion, and not taking it too seriously. If your office is hosting an ugly sweatshirt party, go ahead and dress for the occasion, he said.

\"I think they are great! I had a mother and sister who have a whole collection of horrible sweaters,\" he said, laughing. \"If you acknowledged it's really obnoxious and kitschy [you're on the right track]; if you think it's serious, you have a problem.\"

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