Hi, your chin has "ptosis" or a mentalis muscle that has rotated downward at a 45 degree angle. Smiling contracts that muscle making it more apparent. This typically occurs when the chin is weak and does not have adequate bony support for the chin muscle (mentalis muscle). In addition, your chin is ,as described above, quite weak. I have performed many facial shaping procedures, including Chin Augmentation with dermal fillers or silastic chin implants, for over 30 years. When the chin is weak, this creates an imbalance making the nose appear larger, the mid face top heavy, the lower face looks short, de-emphasizes the lips and allows early formation of a "double chin". In some cases, such as yours, the weak chin can also create a "ptosis" of the chin. Proper placement of a silastic chin implant adds forward projection to the chin thereby creating harmony and balance to the lower face. Using the same incision, liposuction can be performed to reduce the fat and further shape the neck. Excess skin, from below the chin, can also be removed through the same incision. I have found that placement of a silastic chin implant, through a small curved incision under the chin (also allows excess skin removal) to be very safe, quick, highly effective and far less invasive than a sliding genioplasty (requires extensive tissue dissection, bone cuts and placement of metal screws and plates to secure the cut segments of bone). I perform chin implant surgery in 30 minutes or less, often using a local anesthetic alone. It turns out that in the scenario of a weak chin with ptosis that a properly placed silastic chin implant will correct the weak chin and cause the chin muscle to rotate upward also correcting the chin ptosis. In my opinion, you are a good candidate for chin implant surgery. Hope this helps.