cas underwear

Hello simmers!!!

i have a problem with my underwear, each time i go in cas my female sims doesn't have a pantie , like i used sims4 studio to create my own underwear but the bottom doesn't show. And evenbefore i used sims studio , when i try to install defaultunderwear cc the bottom doesnt show and its only on my female sims like she has her bra but not the bottom. 

If yall can help me :) thank youuuuu