Bianca One Shoulder Bra - BlackA bra that feels soft, wicks sweat and scores major style points? Girlfriend Collective did that. Meet the Bianca One Shoulder Bra in black. Compressive Sweat wicking 4 way stretch Support band TSE tip: your normal size may feel tight at first, but will mould to you over time. Get a size up if you prefer a less compressive fit or if you are between sizes. For more details on different Girlfriend Collective fabrics, sizes and fits, check out our