The present disclosure is directed to various embodiments of an adjustable bra, or sports bra. The bra includes a front portion, side portions and a rear portion. Two straps extend between the front portion and the rear portion. The bra further includes a chest band which extends about its lower perimeter. The bra additionally includes a corset mechanism. The various embodiments of the bra disclosed herein are adjustable in at least four ways to suit any size and any activity. First, the wearer may adjust the diameter of the chest band. Second, the wearer may adjust the length of the straps. Third, the wearer may adjust the position of the straps (i.e., whether crossed). Finally, the user may adjust the corset mechanism to vary compressive forces on the breasts. In various embodiments, each of these adjustments is made from the front of bra and without requiring removal.