The internet is buzzing with the resurgence of Y2K when it comes to fashion. But what exactly is it? Y2K is an abbreviation for the year 2000. Initially a representation of the millennium computer bug that messed up dates back in 2000, Y2K also refers to the fashion trends and styles of the early 2000s.So what are some of the biggest Y2K trends?While low waist, midriff-baring jeans may seem like a nightmare for some, Y2K also includes other trends.Velour TracksuitVelour tracksuits in monochrome were everywhere in the 2000s, from airport looks to casual looks. This outfit was spotted on international and Indian celebrities alike, with everyone else catching on the trend.Image Source: fiftytwothursdays.us,nssgclub.comSmaller BagsSmaller shoulder bags, like baguette bags and saddlebags, were all the rage during Y2K fashion years. Both bags can be seen on the runway and street style today, making sure the trend does a comeback.Image Source:polyvore.tn,vanityfair.comColourful AccessoriesWhether its beaded chokers, bracelets or tinted sunglasses, colour is everywhere when it comes to accessories. The best way to bring this trend back in your closet would be to mix it up with your metallic toned accessories to create a balance.Image source: weheartit.com,etsy.comHair AccessoriesThe bandana, bucket hat and kitsch hair clips dominated 2000s fashion, adding a quirky touch to any outfit. The 2021 versions, while no less quirky, are definitely a current version of the trend.Image Source:buzzfeed.com, Instagram/aliaabhatt/Double DenimEveryone remembers Britney Spears and Justin Timberlake twinning in their double denim outfits on the 2001 American Music Awards red carpet. While denim-on denim never really went off-trend, the Y2K era was more focused on double denim outfits in the same tone.Image Source: Eonline.com,Harpersbazaar.comWhy is Y2K fashion trending now?Fashion trends tend to be cyclical, coming back every few years in updated avatars. Whether its the shoulder pads from the 80s, or the 60s mini hemlines, most fashion trends have been revisited by designers over the years, thus trickling down to high street fashion. This is why it was no surprise that Y2K trends made a comeback recently. Additionally, second-hand and vintage fashion is seeing an upward trend, owing to the increase in the demand for sustainable options. This means that pieces from the 90s and 2000s have been resurfacing at many thrift stores, especially those on Instagram. Overall, Y2K clothing lends a feeling of nostalgia for millennials who grew up in the era and is being adopted by the experimental Gen Z population as a new stylish aesthetic.