VIVA Barcelona One Piece Swimsuit

I ordered the same size as I always do with other brands (Speedo, Arena, etc) but the fit of this suit was very awkward. The chest area is cut in pretty far on the sides, and also feels very loose when you get it wet. The bottom half fit perfectly on me. The tie back is cute, but it doesn''t adjust enough for the large-sized chest cut to be form fitting on me. I dove in for practice and the suit immediately filled with water and started to grow in size (felt like the suit went up like 2 sizes). The fabric is nice quality, and is pretty thick so I could see being able to get a few seasons wear out of it. I fear that if I order a size down, the bottom will be too small on me, so I will be trying my best to return the suit.