I vote to give them to charity. It is what I did. Keeping them means you do not think you will stay at your current weight and status. To me that seems self-defeating. I will admit it was hard to hand off some of the things I had but they have gone to someone who needs them and I feel much better in my new clothes. I do not intend to ever be that size again.
By the way, congratulations on that weight loss. Good for you.