The day will start as any other but we all know that it will be different. Her morning routine will differ because she will choose the highest heels that she owns and will have taken care that she is smooth below. This is important because she knows that she will be leaving the house without knickers and the sensation of the cooling Autumn air will remind her that this is no normal day. She will choose a dress/skirt that is short enough that this sensory experience is apparent but that others will not be aware that she is so exposed. She knows what she must do ... she must lie on the floor on the living room while her husband takes an image of her bareness.
He will drive her. He knows that this is the day but will not pass comment. He will drive her into the city and they will chat as normal. He will park in the city and she will leave the car to go the shop from which she buys underwear for both herself and for her husband's tastes.
But this is a different day. She is going to buy knickers to wear for the Writer. As she walks to the shops she imagines which type he might like. She has bought underwear before for her husband but she tries to imagine what the Writer might like. Even the thought of it makes her feel like a bad girl that her husband has driven her to this shop to do this. Would the Writer like thongs, French knickers, or lacy, or others? She concentrates hard on what little she knows of him and imagines but finally she chooses.
But ... she cannot just purchase the item and leave. She must buy them and then decide to try on a dress. In the changing room, ignoring the dress, she must open and remove the packaging and then pull on the knickers. She will then leave the shop and return to the car. Of course he will know that she has purchased the knickers for the Writer but they will not discuss it and she will not show him and he must not seek to look. He asks the price and silently gives her exactly one third of the cost.
It is important that they do not speak on the return journey. The silence is only exacerbated by the fact that he knows that she is not bare any more and she is acutely aware of the knickers. She has worn knickers all her life but she is now suddenly intensely connected to them .... these knickers bought for the Writer. She can feel the fabric against her and this connection between her brain and her pussy, mediated by this garment becomes electric.