@ilovecherries -as it's early days in weight change, I would wait one more year and then sell them. Do weed out anything you don't really love now and use money to buy a few inexpensive bits to take you through this summer.
If it was longer term weight change (i.e. this time next year) or things that never really suited, I would get rid.
I am planning a mass eBay sale of clothes prompted by a passage I read: "Keep things you use and discard those you don't. Things are given life by being used. Keeping something because it would be a waste to get rid of it is a kind of torture. Free yourself from the waste argument, and you'll begin to see the value of things".