Sleep Bra for Support After Breast Implants and Lift?

For women who exhibit excessive laxity of the skin and breat envelope preoperatively and for whom I believe may be at a higher rate for breast ptosis (sagging), I have recommended that they wear a sleep bra that provides gentle support and prevents the breasts from sliding outwards at night.
During the day I frequently recommend an IPEX style or Biofit bra without underwire. Jogbras are also excellent. Probably the most important factor is comfort so that the patient complies with bra use. I do believe it provides some protection against recurrent sagging but this is only my opinion and not scientifically validated.

I prefer that the patients wear no bra for 1 month after surgery to allow the wounds to heal.  Any pressure on the healing wounds can be a problem.

It’s not unusual for patients to undergo breast
augmentation and breast lift surgery in combination. When these procedures are
performed together we typically have patients wear a compressive surgical support
bra for three weeks following surgery. After three weeks, patients are switched
to an athletic sports bra that’s worn for an additional three weeks. In the
early post-operative period, bras are worn day and night. After six weeks,
patients are switched to an underwire bra which is only worn during the day.After six weeks, we generally don’t recommend the use of
a bra at night following this type of surgery. Occasionally we see patients who
are more comfortable when they wear a sports bra while sleeping. When this
situation arises we have no problem with the use of a sleep bra. It’s important
to understand that each patient’s situation is unique. It’s therefore important
to discuss this issue with your plastic surgeon.

I recommend that my patients wear their post-surgical bra every day and night for the first 8 weeks after their surgery. This provides support for the breasts and minimizes the risk of "bottoming out". A soft cup, wireless sports bra is good, or the compression bra recommended by your surgeon. Either should have hooks in the front, so that you don't have to struggle when putting it on.

Every surgeon will have a different postop plan and will tell you different things. I can only tell you what I recommend.
I generally have my patients wear a surgical bra/sports bra for about 4-8 weeks. I also have them wear sports bra to bed for the first 4 weeks. After that there is no need to wear sports bra to bed.
However, I always recommend the use of a sleep bra (it has a bit less support and more comfortable) to help prolong the youthful results as much as possible.

Wearing a sleep bra may offer you more comfort at night, especially during the first 6 weeks afterward.  Then, I would avoid any undwire bras for at least one year as this may place pressure on part of your incisions and irritate them.