Fashion Forms Bra Extenders are perfect for temporary weight gain and maternity wear. The Bra Extenders add inches of comfort for half size and hard to find bras. Fashion Forms Bra Extenders fits most major bra bands.ff29654blk, Fashion Forms Smooth Strapless Bra with hidden pockets come with clear straps and a re-enforced elastic band that prevents that bra from slipping. A demi-cut front provides maximum cleavage when padds are added to the pockets.