The ladies' costumes are all very low-cut and nearly revealing in many cases throughout the movie.
Porthos brings three prostitutes to make love to him and Aramis, but Aramis is busy praying. Porthos tells the girls, "He is hung like a donkey." One replies, "So are you."
Porthos and Aramis have a fairly explicit conversation about the importance of women's breasts in the overall scheme of things.
While D'Artagnan is attempting to find the King and persuade him that Athos' son shouldn't be sent to the front lines, he hears the King in one of his apartments having relations with a woman in his bed.
Porthos is seen frolicking with 3 women in a pile of hay in a barn. He also makes a metaphorical reference to impotence by saying that his "sword is bent" and one of the women says that she can straighten if for him. Shortly after, you see his nude buttocks three times, including one time when he is bent over with his buttocks pointed straight at the camera.
The king is seen in bed with a woman apparently having just finished having sex. He leaves the bed and the woman is seen sitting up, apparently nude, but covering herself with the sheet.
The king is seen in bed with a woman who is clearly nude above the waist and her arm is strategically placed to obstruct the view of her breasts.
Porthos interrupts the business of a brothel to have the ladies do some sewing for him. In the process several semi-clad men are seen leaving. Porthos tells the women to get to work except for one that he singles out apparently to have sex with while the others work.
Some kissing.
We see Queen Anne during childbirth.