Y2K Aesthetic

Y2K is close enough to be recognisable and far enough away to have become a style rather than just old clothes.

The wardrobe is specific: low rise, cropped, shiny fabrics, small sunglasses, hair clips, and a slightly futuristic silver running through it. Played straight it looks period-accurate and a little flat. The version people actually want is the one where two or three of those signals are used and the rest of the outfit stays modern, so it reads as a reference rather than a costume.

Try both. The pure one is fun once, the mixed one is the one you keep.