To make a long story short, in my early teens I dressed and was quite passable with the help of a female cousin who had great makeup skills and a wardrobe of clothes that fit me.
My cousin came to know of my situation when she overheard my mother confiding to my aunt about her suspicions. Nonetheless, my cousin thought it was fun and many a Saturday when everyone was gone she would help me dress and we would go shopping and do lunch. However, once full puberty hit my stint of passing and going out was over.
I recently met up with my cousin and for the first time in years she brought up my hobby. I was stunned to learn that both aunt and mother knew what we were doing. It turned out my mother saw us out once and then later grilled my cousin on who her "new" friend was.
My cousin said she couldn't come up with a consistent story and caved in to expose our masquerade. My cousin said mother and aunt decided it was harmless and calling me out would do more harm than good. So let it run it's course.
Although in their late 80's, my aunt and mother are still alive. So do I somehow bring up the subject with my mother or just let a sleeping dog lie? After all it's been like 47 years.