Liposuction can help if the issue is a small amount of pinchable fat under the skin, but it will not completely remove the normal fold that happens when you sit. From the photo, you appear to have a slim frame with mild lower abdominal fullness and a natural sitting fold, rather than a large amount of excess skin. If your skin tone is good and the concern is localized fat, a limited liposuction procedure may give some improvement and can sometimes be done with local/tumescent anesthesia, depending on the area, your comfort, and the surgeon's approach. If the main issue is loose skin, muscle separation, or simply how the abdomen compresses when sitting, liposuction alone may disappoint. An in-person exam is the best way to decide whether lipo, skin tightening, or no surgery is the most appropriate choice.