Does sleeping with a bra on make your breasts bigger?

Breast size is primarily determined by factors such as genetics, hormones, and body weight

important to wear a bra that fits properly and provides adequate support during the day

The size of your breasts is primarily determined by genetics, hormones, and body weight.

Wearing a bra while sleeping may be uncomfortable for some people and can even restrict blood flow, which is why many experts recommend sleeping without one.