A Push-Up Bra
What it does: Designed with additional padding — in the form of foam, gel, water, or air — at the bottom portion of the cup to lift the breast, it gives the illusion of a fuller bust and can create cleavage where none existed. It's typically a must have for women with smaller chests, but for those with fuller figures, a good push-up can lift without necessarily adding volume.
When to wear it: It's most frequently used for eveningwear or with outfits that benefit from a more filled-out bodice.
When to replace it: You're likely not wearing these very often, unless the club is a nightly stopping point, so if cared for properly, this bra should last at least nine months.
H&M Super Push-Up Bra ($18)