Fantasy Curve Plus Size Longline-BH-Set

I'm am annoyingly on the boarder line between the sizes so went for the bigger one as that's usually the best bet.Nope.The back size was too big and the cup was too small.Also the triangle straps on each cup are too close together so cut into the breast and pull them in on themselves making a weird, unattractive shape.I think I can make this workable and look good if I unstitch the traingle straps and resew them slightly wider so they hug around my breasts like in the displayed pic rather than cutting them into weird shapes.