"Labels are for cans, not people" Anthony Rapp (American film and stage actor)

Whilst on my daily tube journey today, I noticed something that I kinda forgot existed; jean size labels, on the outside of the jeans, for all the world to see.  Im talking about Levi's, although Im not sure if other brands do this too.

What's the reason for it?  I suppose at the time (and maybe still now?) it gave them a point of difference between them and other brands.  I myself, am sure that I would have had some of these at some point, but now, I just think it looks silly!  We dont walk around with our size labels on the outside do we....Oh, Im a 38 FF (not me ha!), my arse is an XXL... (again, not me!) but you see what Im saying?  So from my journey today, I found out that the guy stood next to me on the train had a waist measurement of 34 inches and legs measuring 36 inches.

Like everything I write, it's not Gospel, it's simply my opinion, but let me know what you think!  If anyone who reads this wears these jeans that Im talking about, no offense intended!