ICAP Flap (inter-costal artery perforator) skin and fat on the lateral chest wall can be used to augment the breast. This tissue is taken from under the arm. The tissue used is named according to the blood vessels which supply it. The blood supply to this tissue is either from perforators through the muscle between the ribs (intercostal perforator artery or ICAP flap), from the blood vessels in the armpit (axilla), or from perforators through the latissimus dorsi muscle (thoracodorsal artery perforator or TDAP flap). The living tissue is turned over and secured under the breast.