An adjustable bathing suit including a channel extending through the length of a waistband. An adjustable band is received within at least a portion of the channel and is attached to the bathing suit. Preferably, the adjustable band extends around the front of the hips around a majority of the waistband. The adjustable band includes a plurality of openings for receiving a button attached to the bathing suit. The button can be located at the rear of the bathing suit. An opening in the waistband is provided in the location of the button to provide access to the adjustable band contained within the channel. A flap attached to an upper portion of the waistband extends over the opening of the waistband for closing the opening. The flap can include a self-gripping material and a self-gripping material can be positioned under the flap for providing secure closure of the flap.