I think online ordering is more wasteful because people order the wrong thing and don't know what sizes fit so they often buy multiple sizes and return or toss the ones that don't fit. This article where they buy a pallet crate of returned amazon clothing is pretty crazy- it was all polyester crap!

https://www.nytimes.com/wirecutter/reviews/mystery-amazon-pa...

I saw commentary from a garment designer that there is enough clothing currently unused on earth to clothe the entire next six generations even if we completely stopped all production now.

At least in person people can try the stuff on and ensure it fits.