So here are a couple popular tags that work for me and my shop. I'm not an expert by far, but these tags have worked for me. Please share some that have worked for you in the past.
General 90s hip hop looks:
-Soft Ghetto, Hip Hop, baby girl, trap, baggy, yung lean (white rapper style), fuck boy, rap, fresh prince, Aaliyah
Colorful later 90s looks:
Vaporwave, Seapunk, pastel goth, raver, club kid, fresh prince
Darker 90s looks:
Aesthetic, health goth, cyber, cyber goth, punk, cyber punk, sadboy,sadgirl, trashy, grunge
When you have something never worn, but vintage:
Rare, Deadstock, NWT
These are just some but please add more that work for you!
