I gave away jeans that were two or three sizes too big for me (several years ago) and now I'm in one size larger than those that I gave away!!
I am in the opposite position. I have lots of jeans and nice pants that are too small for me and I'm not giving them up. I just wish I could get motivated enough to get back in them.

Good for you for shedding the weight you gained over the holidays.

ETA: (after reading your post before mine) The jeans I gave away were to a co-worker. LOL I didn't have to ask her if she wanted them. We somehow got into a conversation about weight and size. I told her I had lots of pants in this size and she said that's her size! So it worked out perfectly.