So there was no main character for this. The actresses were most likely all XXX stars but I don't really remember anyone in the movie.

A few other details I remember:
- the vignettes were presented as memories from the various girls trying to get the showgirl job, showing their past and what got them to want to become a pro dancer
- the scene I described showed "Stan" as a bit of a sex addict that was trying to find someone who could keep up with him. So she went over all the rules at the beginning of their session, which included no kissing. So near the end of the scene, the girl seemed like she was almost getting tired of Stan so she asked him "Are you going to cum for me Stan?" as if she was waiting for him to finish so the date could end. And when she told him that hookers don't cum, he kind of looked a little disappointed and then started going 100% until he finished. During those moments he was sitting on a couch/chair/bed and she was sitting on his lap facing him, and when he turned it up to 10 she kinda threw her head back and started to enjoy it a little, almost surprised that he could go harder. Then he finished, kinda let his head relax into her chest, and that's the end.

[Link]