I can't tell you how much clothing I had thrown away over the years. Suitcases and boxes full of everything a girl needs. Now, here I am at 58 with a full closet and a life as a public and very real woman who is more real than the man she is built on.
I suppose you can give some stuff away or store it or something but, while I wish you luck, I am not sure you won't find yourself dressing yet again down the road.
btw: I successfully stopped dressing (so I thought) for nearly 8 years. The last time I gave it up the resolution lasted less than 24 hours.
Hugs and good luck.
Will see you dressed again some day. (I'm an optimist - you can run but you can't ever run fast enough to get away from you and who you are.)