Where is a good place to buy a good inexpensive low back strapless bra for under a bridal gown?

If it cinches the waist that would be good but it doesn't have to. 38C is my size. Thanks

If it is just a strapless, go with a cheapie.
If it is a low back strapless, get a good one at Victoria's Secret, or a department store with large lingerie department.
They can be incredibly uncomfortable, if they don't fit right.

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