ViX Women's Solid Red Crossed One Piece Swimsuit

Loved this bathing suit but I had to return it because it had such an awkward fit ! The medium was super tight on my bum but very loose on my boobs with little support around the breast area. I am a size C so I can't understand how the top part would be so loose on me. If I were to exchange for a large it would have fit on my bum but then would have been even bigger on my top! Too bad. I weigh 145 and am 5'4". Usually a small/medium in most stores.