At the door

You get to her house quite early. Her house is a modest affair, but it seems to be a nice place to live. You ring the doorbell. For a while, nothing happens, then you hear frantic footsteps coming to the door. Miss Sue arrives, flushed, in a very tight vest and panties.
"Sorry John," she pants, "I wasn't expecting you to arrive so early. Could you give me a minute to, you know, get dressed?"
Without waiting for a reply, she dashes upstairs.