>>23337961William Ware Theiss Theory of Titillation: "The degree to which a costume is considered sexy is directly dependent upon how accident-prone it appears to be" (accident in context meaning wardrobe malfunction resulting in display of otherwise intentionally covered, sexually arousing body parts)
All a skintight bodysuit like that needs is to be a little chilly in the room (hard nipples) or to be a tad snug in an area and get pulled wrong (split to reveal),