I think I don't make more than 6 of the same series, also using the vertical/horizontal variations, different angles, adding/taking some element.
As you say there are different clothes, I would consider each case a different series, just the same model.
Sometimes I do a search and I find TOO many of the same subject and set up, with very little variation, it gets very boring. These are normally from the top contributors, maybe otherwise sites would not accept as many variations. Still, if they sell, it's good for both. This is one thing that I consider positive in that best match change in IS.
Regards,
Adelaide