She is a reverse Tess Holiday (at least Tess from a few years ago). Instead of not really gaining fat on the face, Vergie seems to gain all her fat on her faceLet's be real. Virgie has only embraced FA because she is seriously ugly and she thinks that if she screams loud enough about being fat people won't notice her actual looks. If she didn't wear form fitting/revealing clothing, her weight would draw absolutely no attention. She is no more overweight than the average dumpy secretary in your office. But she is all in for BoPo because that face could break mirrors two miles away.
Actually her entire diet unfortunately shows on her face given how disgusting her skin looks
... But most popular fat activists try and look as feminine as possible. And most companies who make exclusive plus sizes have really girly dresses and shirts (I'm guessing because it's easier to make dresses which fit than pants). Look at Addition Elle, they have really cute and girly clothing. Hell, look at Tess Holiday and the general pinup aesthetic common to fat girls who want to look girly, many now associate pinup with a little chub. And if you aren't a super fat you're probably going to get the same clothes as anyone else due to vanity sizing and plus size sections of popular stores
Now for people being attracted to you that's a different story. If you're a super fat your girly outfit won't change the fact that you stuffed your face like a pig to get to that point which isn't considered girly (and your face/body just won't look that feminine). People attracted to really femme or girly girls might not associate pig behaviour with being girly which might make them less attracted to you but that's not a society issue, you're just not their type of girly. I haven't seen much of an issue with people seeing mildly chubby femmes as girly though. Natalie Horler of Cascada had a shoot for Playboy a while back with no issue (hell, I think she was more worried about her body than anyone else)