First, I know the correct answer here is "get your feet sized at AE" and I am doing that on Monday at one of their stores, but I am trying to figure out what the heck is going on here... I always thought I was a size 11D for shoes. I have always worn the 11D and have been happy. Recently, I got some AE 11D oxfords and 10.5D in loafers, and they were too big, so I took them back and ordered down to a 10D in the oxfords and loafers. Before I re-ordered the shoes, I got my shoes sized, and the salesman told me I am not a size 11, but can take either a 10 or 10.5, not 11. Today my AE loafers came in the 10D they were supposed to be, and I am very happy with the looks of the shoes. However, when I tried them on with my accompanying AE (thin) socks, the shoes are too big and my feet slide a little. I tried on some random loafers at the store I got sized and a 10D seemed to fit me fine. Is a little slippage in loafers ever OK? When I put my feet in the shoes and put my feet on the ground, I can slide my feet up and down the shoe. Does this mean the shoe is simply too big? No matter how much I like the shoes, I won't be paying (and wearing) stuff that does not fit me...I would rather wear $50 dress shoes that fit me than $500 ones that don't, but I am getting OCD when it comes to the fit of shoes, so I really don't even know how to tell if shoes fit now! I have about 1/2 inch of clearance with the shoes. Any idea what is going on? Could I wear a 11 in sneakers and a 9 or 9.5 in loafers? According to the shoe measurement thing, my feet were clearly in the 10s, so I have no idea why my 10 loafers are loose. I did some research and found out that some people are not a good match for loafers, and since loafers don't lace up, they are unforgiving when it comes to size.