My soft belly, mom approved swimsuit haul :-) Brown top and bottoms: size up in top if in between sizes, size down in bottoms (I got an XL top and medium bottoms) Black top and bottoms: size up in top, true to size bottoms (I got an XL top, large bottoms) Flirty floral top and blue bottoms: true to size. I got a large in both. Blue one piece: true to size. I got a large. Cream with pink floral one piece: reviews say it runs small so I got an XL, but I think I would have liked the large better :-)