A Roblox assignment on Glow Up was a natural fit, Winnie says, because Roblox users enjoy experimenting with their appearance through their avatars.

During a semester-long Parsons School of Design class, students learned how to create digital garments using Roblox, the gaming platform especially popular with children.

Philipp Batura didn’t expect one of his most successful designs to be a giant red bow. Simple and cartoonishly oversized, the ...