Is it normal for a boy to try on moms clothes ?

When I was 12 I had went in my moms bathroom and noticed she had taken off her dress clothes. They wear laying on a chair so I put on the pantyhose and things felt real good. Then I put on the slip, it felt even better. So I then put on the dress and shoes. My dick was hard as a rock I began to play with myself it felt real good. By now I could take any more I seen some face cream by the sink. So I pulled the pantyhose down and slip an dress up and played with my self it didn't take long and it was over.