When I was losing weight and needed to buy smaller shorts, I phoned Team Estrogen and got a lot of good advice from the sales staff. They sent me two pairs, and I had planned to send one back, but liked them both and decided to keep them both.

If you don't know what you like yet, it might be a good way to help you get started. And you can return them if they don't fit, but you won't be able to ride in them and then return them....