Midriff Cutouts Whether you like a circular cutout at the centre or you prefer a knotted maillot with fabric gathered at the centre, so your cutouts are on each side, this look brings even the most simple one-piece a little something special. Madewell Second Wave Ribbed Racerback Cutout One-Piece Swimsuit ($80) Image Source: madewell.com Madewell Second Wave Ribbed Racerback Cutout One-Piece Swimsuit $80 from madewell.com Buy Now