Fortunately, I can wear most kids undies although Funpals are a bit tight because they only go up to size 8. Oshkosh B Gosh's run a bit large and size 12 fits me perfect. Children's Place also has colorful undies up to size 14. I wouldn't buy adult size undies made like kid undies because they just aren't the same . I also wear kids pants, jeans and shirts.