What bra options do I have for a dress that has a very low back?

Something Comfortable offers several solutions!

Check out the backless, strapless NuBra which gives you the effect of wearing a lightly padded bra without straps. With adhesive inside, Feather Lite’s outer shell is made of fabric like a regular bra.

Also the Le Mystere Dos Nu Convertible Bra is a smooth moulded, low back bra that comes with multiple straps. It can be worn three ways with some of your sexiest tops: criss-cross, halter and wide set.

Another option is a product called Liftits by fashion First Aid.  Liftits are a hypoallergenic adhesive product that is applied to the top of your breasts.  The results are incredible – your breasts are lifted up to 2” for women with A-D cups.