We can't make skin disappear, unfortunately
, sorry to be the bearer of bad news...
Eventhough you've lost weight slowly it may still take your body time to readjust itself, your skin may spring back you have youth on your side
.... Genetics play a huge role in determining how your skin will spring back....
Do you weight train? Weight training will help make muscle to somewhat fill out the skin and will look much nicer.
I work with a lady, 48ish yrs old, who has lost about 70lbs in a year... At first the skin around her face and neck was very loose and saggy, this is the only part of her body I can really see
, the other day I noticed that this is almost gone and she looks much better. So, I think, that your skin may catch up in time....
Don't despair you are so much healthier since your weightloss and clothes camouflage a multitude of sins... Like I said you're young and your skin may spring back...
Hope this helps....