Wardrobe downsizing

So I’ve lost 12lbs and want to loose 40 in total. Of course some of my clothes are too big now. In my mind I’m thinking I shouldn’t throw these out just in case I need them again! So I will work on model about that! I’m looking forward to buying new clothes for this season but hopefully they will only last a short while before they are too big too!
I know many people must have gone through this. Any advice about how best to work with this?