An adjustable brace apparatus provides, in an exemplary embodiment, a pair of elongate wings configured for wrapping about and substantially conforming to a portion of a body of a user, an adjustment sleeve configured for slidably receiving each of the wings, and a pair of first and second tightening segments removably engagable with each of the wings and slidably engaged and suspended within the adjustment sleeve, thereby enabling the wings to substantially float and selectively overlap atop one another within the adjustment sleeve. In use, the user is able to selectively position, wrap, and engage the wings around the user's body portion, and selectively draw the wings closer against the user's body portion.