The present invention relates to a garment (1), and more particularly an underwear, sportswear or swimwear garment (1) for a female. The underwear, sportswear or swimwear garment comprises an open-sided structural frame (10) and a fabric covering (20) for the structural frame. The structural frame (10) includes an anterior contoured loop (15) and a posterior stem (12), relative to a wearer of the garment in normal use, wherein the anterior contoured loop (15) is adapted for surrounding the mons-pubis region, genitals and anus of a female wearer and has a perimeter that is contoured to conform to and engage with the anatomy of the female wearer. A portion of the perimeter of the anterior contoured loop (15) is adapted for tensioned engagement with the inner thigh muscles of a female wearer when worn, in a standing position or whilst walking. The posterior stem (12) is shaped so as to be engageable by the gluteus maximus muscles of the female wearer when worn. The anterior contoured loop (15) and the posterior stem (12) are formed in a sprung-biased arrangement relative to one another such that when the underwear, sportswear or swimwear garment (1) is worn on the female body, a tensile force is transferrable from the posterior stem to the anterior frame portion.