Does it do any good to wear a bra at night after a mastopexy?

Thank you for your question.  Wearing a bra after a breast lift does help maintain shape by reducing swelling as you've stated. After the initial swelling has resolved, there is likely little benefit to wearing a support bra, most especially at night when you are lying flat in bed and the forces of gravity are not pulling down.  Your surgeon may have a specific reason to have you wear your bra at night, so please consult with them prior to discontinuing use of night-time support bra.  Best wishes!

The bra does offer support while the breast are healing and helps to control swelling. I believe the bra does not shape the breasts, that is done in the operating room with the surgery. If you think about it, at night when you sleep on your side the breasts are hanging to the side. Constant pressure and gravity stretches skin and with time ( years) the breasts can fall down and to the sides. Gravity works again. In my estimation, being anti-gravitational is important.Good LuckStephen M. Davis, MD, FACSGreen Hills Plastic Surgery