Why are Men's Pants Sizes Different From Women's?

Men's pants are sizes by waist and inseam, while women's sizes simply start at 0 or even 00. Why the difference? And who's the victim of vanity sizing?

WOMEN'S JEANS SIZE TO MEN'S JEANS SIZE CONVERSION - AKINGS

Sizing Chart

Understanding Men's to Women's Size Conversions: And Vice Versa

Size Guide Dickies New Zealand

Size Guide – Urban Planet

Girls' Jeans Size

How to Read Pants Size: 10 Steps (with Pictures) - wikiHow

Experts reveal why women's jeans sizes are different from men's

Spidi Women's Pants Size Chart

Reebok men's and women's size chart