I saved one pair of pants, my biggest ones and tucked it away so I can pull them out when I reach my goal weight. As I lose the weight and my pants and shirts get too big I am not saving them. I don't ever want to look back or make it easy to put on my 'fat pants'.
I have already dropped 3 pants sizes so instead of spending a fortune on new, temporary clothes, I buy my pants at thrift stores. Not only am I saving money but I am helping a good cause and recycling my clothes. I donate mine, by cheap, reward with new at milestones.