Dealing with Your In-Laws

I only have one problem with my mother in law. she loves to buy me stuff. and i really dont need any more stuff. especially clothes. we see her about once a year and i hate shopping. she loves to shop and no matter how hard i try not to go shopping with her she still manages to get me into a store or two. and she makes me try on clothes and then she wants to buy them for me. a couple of months ago she came here to se my son wrestle at state. the meet was right across form cabelas. we had some slack time in between the matches so everyone went to cabelas. i figured i would go look at guns caus ei love guns. she said she needed more comfrotable shoes. well, she had me trying on clothes for over two hours. I must have tried on everything in every color. then she wanted to buy everything i tried on. most of it was way too young for me. im 47 and short shorts that go up the butt are just not my thing. but she thought they looked cute. my husband was no help. he said that i shold let her buy me stuff cause she would get her feelings hurt. i didnt watn her to spend money on me so i agreed to one outfit. i finally got out of her grasp and went to wait outside, when we got back to the hotel she had bought me 12 different outfits. most of them i will never wear. well she found out my size and later that evening she got my husband to take her to a mall. i told her i was tired and wanted to stay in the room. she came back with a bunch more stuff. i feel really bad cause she doesnt buy stuff for my sisters in law. she says that the cute clothes dont fit them and it isnt as fun for her to buy stuff for them. iknow they are going to find out becuse mom will tell them about her shopping. that is all they do together. I dont know a nice way of telling her not to buy me stuf. i have used up all my nice ways. my sisters are usually the recipients of the younger looking clothes and they say just to accpet them so that they dont have to shop. she pick out some really cute things but i would probably never buy them because they are jsut too expensive. i feel guilty when i wear them. she called once when i was getting ready to go to a business meeting and she asked what i was wearing. i told her i was wearing a business suit and a couple of weeks later i got a package with 5 business suits with matching shoes. they were all in the 3 to 500 dollar range. i know that i will ever have enough business meeting to wear them to. but there they sit in my closet becasue my sisters dont wear suits. and the shoes, they have 4 inch heels. i can jsut imagine me wearing those work. i work in a hospital.