👉 The Bikini Fluid, also known as the Bikini Effect or Bikini Body Fat, is a term used to describe the phenomenon where women with naturally smaller bust sizes often develop larger, more voluptuous breasts after losing weight, typically through significant dieting or exercise. This transformation is attributed to hormonal changes and increased body fat distribution, which can lead to a fuller, more rounded chest shape. The term gained popularity due to the iconic 1953 film "Blue Lagoon," where a character named Bikini Bottom is shown with a large, full bust. While the Bikini Fluid is not a medical condition, it highlights the complex interplay of body composition and perception in body image.