While complications are rare when breast augmentation is performed by a highly skilled and experienced board-certified plastic surgeon, they do occur on occasion. One of the less common complications is called a double bubble.
Double bubble occurs when folds appear beneath the breasts due to the implant shifting positions following surgery. This creates an unnatural indentation across the bottom of the breast. It is most visible when your arms are raised above your head, and it results in a “four-beast” appearance.
Causes of Double Bubble