This is another one of those things that really depends on the person, how elastic your skin is, how long you've been overweight, etc., etc. I know another site I've been on that's mostly women has discussed it in the past and the general agreement is ... every one of us has had different experiences.
As with all the rest of the skin on your
body, your best bet is to make sure you drink lots of water (hydrated skin is healthy skin) and use moisturizer (all over) and exercise. A lot of people see changes in their skin for a year or more after they reach their
goal weight, so don't give up or think that nothing will ever change.