This bra did not work for me. I have a shallow chest, and found that it gaped at the top.  I ordered this is my real bra size (I always double check before getting new bras), and the size I have for other Maidenform bras. Going down 1 cup size for this likely would have worked. However, I tried this against 2 other bras that worked better for me, so I just returned it .
The way the front dips would be good for something lower cut - so worth trying with a lower neckline.
The price of this bra is also really good (the ones I kept were 2x the price) - so if you don't wear strapless bras very often, this is likely worth trying - just consider trying a smaller cup if you don't have a very full chest