White girl opinions.
Pretty much at any major retailer they go to around a size 16 to a size 20.
Now, the average American woman wears a size 16, so offering only a 16, 18, and up to 20 is giving the average sized woman three
At the same retailers I can easily find sizes 4, 6, 8, 10, 12, and maybe some 14's. So the majority women get three sizes and everyone else gets 5-6.
They can carry extra smaller sizes but extra larger sizes is too hard? Statistically, you are more likely to have more women that are a size 24 then are a size 4.
But instead they have to go online, missing out on any in-store 1 day only sales going on-which Old Navy often does, hope that the size they get will fit them, probably pay extra for 'extended sizes' (but women who are size 4's don't pay less for 'condensed sizes'?), pay extra for the cost of shipping, and get to wait 7-10 days or more to receive their clothing that may or may not fit correctly because online sizing is shit.
Ain't no excuse for that bullcrap.