17 Outfit Ideas for Your Next 90's Theme Party Sammy D. Vintage Throw the Ultimate 90s Costume Party Like its 1999! Creative Costumes 17 Outfit Ideas for Your Next 90's Theme Party Sammy D. Vintage 90s Party Outfit Ideas: Embrace the Vintage Vibes Help a girl out , Im headed to a 90s theme birthday party today and I cannot decide which 90s outfit to wear!, I thrifted a few of these pieces including this iconic D.A.R.E. shirt, and plaid skirt