The skinny side of the store.

I have recently been able to buy a few clothing items in the "Skinny side of the store". I was so excited when I tried on clothing in my normal area, "The plus size side", and nothing would fit me. I happily made my way over to the other side to find clothing that would fit my new found figure. What suprised me, was that as soon as I saw my size sitting next to sizes 0,2,4 ect. I freaked out. I suddenly became so self consious. I felt like I didnt belong there and that everyone was watching me, wondering why the fat girl was shopping on the skinny side. Ive been back to the store a few times and I cant shake the feeling that I dont belong on that side and that everyone knows it. Maybe its just all in my head because I havent been able to shop on that side my entire adult life, but it is slightly ruining something that I should take much pride in and enjoy a great deal. Does anyone else feel this way?