Losing too much weight?

When i ordered my dress i was 127lbs or so... i gained about 10 after that...EEK! but now i'm down to 124-125. My goal was always to get back down to my original happy healthy weight of 110 or so... if i lose that much weight will they be able to take in my dress without taking away from it??? or is that too much? i started to think about it and i was like oh no..lol...
TIA