Can I get that in a smaller size please?

I  went shopping today ladies. Almost everything that I bought I needed a smaller size than I originally grabbed off the rack. I got a dress in size small, a blazer in size small, a baggy cardigan thingy that I don't know what to call in a size small, jeans in a 28- I'm not sure what that translates to, and a pair of dress pants in a 7/8- I could have gone smaller but they were the last pair under size 12 left. I hate how there's two different ways of sizing pants. Why can't they just have one and stick with it. Shaye went on a trip for two weeks. My deal with myself is that for every new thing that I buy I need to get rid of one old thing. That way I make sure that I'm slowly getting rid of all of my fat clothes and am slowly filling up my closet with smaller clothes. Hopefully by the time she gets back I will have lost some more weight and I can pawn off some of my fat clothes on her. I'll just say that the stlye doesn't appeal to me anymore and she won't even know. I think that will be the best thinspiration. Having her walk around beside me in my old fat clothes while I walk around in my new smaller clothes. God I'm a bitch. I'm going to hell for this.