Don’t do it yourself, sit your client on the edge of the bed or make him kneel, stand in front of him, look him in the eye and tell him to peel the gym pants off you, that's a huge turn on. Eventually he’ll probably help you off with the top too.
I'm a big fan of gym gear, and also of the sports bra and sporty range of Calvin Klein, Lounge etc underwear
I agree with davidob555 who likes basic ones, either cotton or satin look,from Penneys or anywhere, the Victoria’s Secret no show knickers and thongs are sexy, or even something like these too
Any woman who can pull off this type of look gets my vote
Or veering more to a lingerie look
They seem to go in and out of fashion but I like those boyshorts on a lady too
So I would say my tastes are probably simpler and not as expensive or sophisticated as most
My all time favourite lingerie set that a girlfriend wore for me is this one
I have great memories of that and of her.
For me, those are both the answers to the question “What is supposed to be sexy, but isn’t?”
But it’s good that we all have different tastes and preferences