I also think @divine1966 made good points. Especially, the idea that he may be a control freak is very concerning - like he wants to make you over as he thinks you should be.

Maybe set a dollar limit on his Christmas shopping. Maybe tell him to save receipts, so you can return anything you really don't care for.

Lastly don't reinforce the behavior. Keep dressing in the clothing you like. Let the unwanted stuff sit in the drawer and closet. Then he'll be less likely to do this next year.

@Bill3 made a very important point. Why did you tell this guy that the two of you were incompatible? Were you hoping that he would initiate breaking off with you? Why put it on him? Are you wanting him to change to be more compatible? That probably won't happen. It sounds like you're unhappy in this relationship, and you want him to do something about that.