My mom knew I wore her things. Just before I got too big to wear them, My grandpa walked in on me as I was sitting at my mom's vanity, wearing her bra, panties and a lacy full slip and putting on lipstick. It seemed that she had noticed her things were being moved,while she was at work, and had asked the grandparents to keep a lookout from across the alley where they lived. Grandma had seen me walk by the window and sent grandpa over to investigate. I got a really good spanking and talking to the next morning. Interestingly, it was explained to me that the spanking was for stealing her things, not for wearing them. I got the impression that I could wear dresses and skirts as long as they were my own. It wasn't long after that when I bought my first skirt.