Problems pants don't fit anymore

Alexis • Mom of a little girl ❤️ Aubree Elizabeth Dellinger was born 9/1/28
I used to be a 3 to 5 now size 8s don't even fit me. I live in Florida and I'm stuck wearing yoga pants or dresses. I am helping clean a house and I'm in yoga pants. It's like 80 degrees out. I don't have money to go buy new clothes. What should I do?