I stole one of the girl's cheerleading uniforms from school. I had already swiped girl's clothes and shoes many time before from the unclaimed clothes box at school that fit me. I liked wearing panties and wore loose fitting clothing, so no one would see a pantyline. That day I saw a door to a classroom that was normally not open and peeked inside. Nobody was there and inside on a rack were all of the cute cheerleading uniforms, a sleeveless top that zipped down the back and pleated skirt and had a back zipper and button. I secretly wished I could go out for the cheerleading squad and wear that cute uniform, but never would because I was afraid of what others would think, but it was a thrill to fantasize about. I was feeling daring and quickly took my shirt and bottoms right there in that school room and put on the girl's cheerleading uniform I thought would fit and it fit perfectly like it was made for me. It was a rush that I could be caught at any moment while I was dressing and undressing either in panties or in the girl's outfit. I think I have never dressed faster than I did that day. No one knew that I liked to crossdress, so I would have been devasted and had to change schools, but I wanted this uniform badly and knew this might be my only chance to get it. Looking back, it was extremely stupid. I would have been very embarrased if a teacher or girl I knew would have found me wearing that outfit or in panties. I quickly put my other clothes on over the cheerleading uniform and it did not appear to show at all. I headed out of the room and straight for the restroom at school. I checked my reflection in the mirror carefully and realized that I could walk right out and no one would even notice. It was such a high as I walked right past several people and sure enough no one noticed anything. I got home okay. I tore off my clothes to reveal my stolen outfit hiding underneath. I put on ruffly girl socks and shoes I had found in the unclaimed that fit me and looked similar to the ones that the cheerleaders wore. I took off the shell top, put on my sister's bra and stuffed it with pantyhose and replaced the top and zipped it down in the back. I admired myself in the mirror at home. I headed for the toilet and best j******* session ever. I came three times in that stolen cheerleading outfit that day. I dressed up as a cheerleader multiple times for my j********** sessions. I did feel bad about stealing it, but I could never return it or get it professionaly cleaned without someone else finding out about it. I eventually got rid of it a long time later because I was worried someone would find it and the secret would be out. I still feel bad about it sometimes.