By Sarah Barkley August 12, 2025 A Y2K themed party is a chance to embrace the bold fashion, catchy music, and all the early 2000s fun. Thanks to TikTok and other social media platforms, Y2K music and fashion are trending again, so teens are loving it even though they didn’t experience it themselves. Many of their parents did experience Y2K, so it’s a fun party to plan together. When done right, this party theme is tons of fun. We’ve put together the best guide to make your Y2K party a success.