Lack of diverse bodies in fashion brands

what happened with aerie? I used to go on there to find clothing and could see what it looked like on non XS models (not that there is anything wrong with being XS it's just not representative of all women. I want to see clothing on various sizes. It's not about health, because even if only skinny people were healthy which isn't always true, but because everyone has to wear clothes regardless if they are healthy and they should be able to see what the clothing looks like on them!) so why don't they have that anymore they used to? but I just looked and all the clothes are on XS?

I went to go buy some sweaters at Sezane but all of the models have small chests. Again nothing wrong with having small chests of course but only 10-20% of women in western countries have A cup so why can't I see women who have larger chests so I know what I'd look like in it? I am so frustrated with this, I don't want to have to buy things and constantly send them back. I also don't want to support brands that are not inclusive.

So where do y'all find shops that are more representative?? Thank you!