A girl should be proud of who she is, her life, her experiences. She also should love and respect herself. She should also know that if she has fat feet, she shouldn't wear strappy sandals.
Fashion can help people look their best, help them cover up their small (or big!) imperfections, with the keyword being "cover up". It's always easier to cover up an imperfection by hiding it, not by showing it.
You expose your best features, not your cellulite.
I apologize in advance for the visuals, but this is not going to be a pretty post.
It's not flattering, much less sexy, to wear a mini skirt, with no stockings, when you have chubby legs. But it's even worse if you pair the skirt with knee high leather boots that squeeze your calves, while all the flesh above the knee is uncovered and loose. Worse still, if you wear fishnet stokings with flesh trying to escape from every (fishnet) hole.
What about belly shirt worn by girls with a flabby, or fat, or covered in stretch marks belly? Granted, it's hard to get a perfectly flat stomach, but that doesn't mean you should stop exercising and wear a belly shirt anyway. If your belly is not your best feature, keep it covered. Nobody wants to see it anyway. Really. It's an eyesore. But if you must wear the belly shirt, avoid running, jumping or dancing with it on. Seriously.
And jiggly breasts need a good support bra, not a low cut shirt.
Exposing flesh doesn't always make you look sexy. When you have some extra pounds you need to lose, exposing too much skin can play against you. Nobody finds muffin tops, backfat, underarm cleavage or cankles attractive. Slim bodies won't look good either if they're not toned.
So use good judgement, and if you're not sure ask your girlfriends, and most important of all, if you're not comfortable in it, don't wear it.