'90s Halloween Costumes: Tia Landry and Tamera Campbell From "Sister, Sister" What to wear: Go full-on '90s with patterned tights, high-waited shorts with matching denim vests, a big shirt, and some floppy hats. How to act: Tia is the book-smart, somewhat-uptight one. Tamera is wackier, but you should both be telling everyone to "go home, Roger." Image Source: Everett Collection