TORRID Special Occasion Dress

Mint Green Special Occasion Dress; worn twice. I loooooove this dress. It’s so pretty and comfy, but I’ve lost over 50lbs since the last time I wore it, so it’s just too big now. The last picture shows then and now with the dress on with the weight loss. There is a stain (I believe makeup) on the back which is shown in the pics as well. I’ve tried everything to get it out. I wore the dress September 2019 for an anniversary party and January 2020 for a winter formal.