BB bottoms in Equinox. The ultimate reversible swimtimate. Made from Italian crushed velvet and recycled tie-dye mesh, this suit’s designed to do it all. Wear it as swim, a bra, or even undies — it’s your go-to for any getaway. Fits tiny. If in doubt, size up! Campaign model Myllena wears size S. Studio model Selina wears size XS.