Many years ago my mother-in-law commissioned an artist to do a painting of my wife (her daughter) and our children. My wife, thirty-one years old at the time, went to his studio with the kids and the painter told he wanted to sketch the boys before they got bored and the wife in a second time. In two sessions the kids were done so the wife begun to pose going there alone. Four other sessions and the wife was ready too. On the last day, taking a break, he got her a glass of wine and they chatted for a bit. He told her that she was very attractive and an excellent model and asked her if she might be available to pose for other paintings. For a small fee of course.
She was very flattered and said she would love to, just give her a call. In a week the painter called. He had to do a series of portraits and female full figured paintings for a gallery in a nearby town and thought at my wife as a possibly model. She had a lot of free time in those days, the kids were in school and she wasn't working. Money wasn't bad and she went. The painter gave her a drape to wear for a bare shouldered pose and asked the wife to leave her bra off just to avoid ugly marks on the skin. My wife did it without a problem and started to pose baring a shoulder. In the beginning he took a lot of pictures to progress the work when she wasn't available, then she posed for a while he sketched and painted. They did small talks and the time passed pleasurably. At a certain moment my wife made a little move and the drape fell uncovering a breast down her shoulder and very politely he asked her if she was embarrassed posing bare breasted under the drape. She admitted to be perfectly at ease and didn't try to recover, so he complimented her natural modelling talent and mentioned the possibility to pose naked for an extra money. They discussed the extras dealing quickly for topless modelling. Money was good and she accepted on the instant with no needs to discuss the new situation with me.
On the same day she started to pose topless exposing her small breasts both. She told me what happened only later.
Days went by and she seemed to be spending a lot of time posing for him but he had twenty paintings to do for the aforesaid gallery. The sessions lasted about two months.
Step by step she undressed totally for the painter in half his pictures. She teased me a bit with the details of posing nude being the work rather explicit and an evening she chuckled "if only my mother imagined what she started sending me to pose for him," but she said he never made a pass at her and it was very professional. He was not exactly a sex god, but a short, rumpled, quiet type.
"He is not the right guy," she giggled again.
Never the less my wife demonstrated a great enthusiasm to the posing job and paid her look a close attention, keeping hair short and waxing her legs and her pubes.
"He wants me totally smooth" she admitted an evening.
We were invited to his art show at the gallery and I was excited about seeing her nude and very identifiable image. The series started with her being dressed and removing garments in progress. The paintings showed my wife's body in details focusing her hard nipples and her vagina. Something absolutely artistic but, yes, absolutely graphic also.
She received many compliments that night and the gallery owner treated her like a star.
What surprised me was not the paintings, which were very good and sold well, but that a minor but considerable part of her poses were with a man in a sort of free interpretation of Klimt's "The Kiss". My wife standing naked to a naked man being kissed and kissing him. This was early in our marriage and we had not ever really discussed such fantasies as cuckolding or wife watching but one of the paintings showed my naked wife cuddling to a naked man and he cupped her ass. In another one of those paintings she hold his hard cock in her hands. The iper-realistic technique of the artist left nothing to the imagination and this really got my attention and excitement level up.