A knee-length black dress and a lacy black panty/bra set

I startle as Master pulls the dress up, exposing my panties. I almost turn around, because it must have only been minutes before i feel the sharp sting of His belt on my ass.
" This. is. NOT. What. you. Were. Told. To. Wear." He says in between blows. "Why. Should. I. Continue. With. An. Incompetent. Slut. Like. You"
He stops, and gingerly begins rubbing my sore ass where im sure the welts are angrily red, and asks in a softer tone, "Are you sure this is what you want, Pet?"