“Do it!”

I nodded and whispered, "Yes, Mistress.”

I walked into the store and found the lingerie department. The sales assistant who came up to me was older, motherly looking. I blushed as I told her I needed to get my breasts measured for a new bra.

She told me not to be embarrassed and led me into a little changing room and pulled a curtain across the entrance.

I slowly unbuttoned and removed my blouse.

The expression on the woman’s face when she saw ‘CUM SLUT’ written across my chest with lipstick made me squirm and blush so hard.