My DD17 was never skinny too, unlike my older DD, who was a size 00 in HS. My younger DD was always sad that she wasn’t skinny like her sister, so keeping her self-esteem up was a challenge, since the person she wished she looked like lived with us.
Anyway....back to the clothes.....
My DD is an athlete and a bit of a tomboy too, so her clothes came/come from Dicks, Kohl’s, Old Navy and American Eagle.
I know you didn’t ask for advice on this, so just ignore this if you want. If she’s upset about her weight, then this is the perfect time to start helping her get control of her weight with what she eats, drinks and lives. I’ve always struggled with my weight and wished I could be thinner, so I understand how my DD feels. I’ve explained to my DD that she may never be a 00, but she can be the healthiest that she can be. So her and I together work on eating healthier and not eating garbage. When I want something not good, she will flat out tell me NO and I do the same thing for her. We can’t eat stuff that’s not in the house, so I don’t buy it. We can’t eat stuff we don’t drive to a drive thru and get, so we rarely get fast food. After 5 years of watching what we eat my DD17 is very good with knowing what she can and can’t have, which I’m proud of. She reads food labels and makes sure she avoids certain foods. She‘s now introducing me to low calorie or low carb foods that I didn’t know about. She‘s an athlete so she works out regularly on her own because she knows that if she doesn’t the weight will start creeping on. Weight loss and keeping weight off is a life journey that never ends and the sooner we learn how to live on that journey the more we can enjoy our life. I wish my mom would have helped me when I was in middle school, so that’s why I walk along side my DD to make sure she doesn’t get her weight out of control like I once did.