Still have loose skin after tummy tuck when sitting down. Do I need a revision? (Photo)

It is much too early in your postop journey to consider revision. Follow up with your surgeon and try to be patient

Everything will depend on what your starting point was.  It looks good with you standing.  There will always be some loose skin when you sit.

First of all, you are too early postoperative to judge the final result. You still have swelling, which may persist for several months. Try and be patient as things tighten and heal. Secondly, it is normal to have loose skin when you sit down. If your skin is tight in a seated posture you won't have enough skin when you straighten your posture. One of the biggest mistakes a surgeon can make in tummy tuck is to pull the skin too tight. This tightness can result in tissue death and open wounds, which is much less acceptable than some extra skin.  I think you have a nice result which will only improve with time.