To unlock these item categories in the clothing store, you first need to purchase the Outfits > Lowrider Classics > The Sanchez from any clothing store counter. Once purchased, you will unlock a new section in Tops called Blouses (red, white, black and can only be worn with the High Waisted Pants without glitches or components) and in Bottoms called High Waisted Pants (gray, white, black and can only be worn with Blouses, Loose/Party Tanks, or Special Top Hoodies without glitches or components). You will also unlock Accessories > Suspenders (red, black, and white that are only compatible with Blouses without glitches or components).