I came across a blog post by @HugsFromFei called Why Keeping it Platonic Counts.
Some quotes:
To us, G-rated doesn’t simply mean that nothing overtly sexual occurs, but that even the intention, and energy of the space does not have a hidden or underlying erotic tone.
Our marketing seeks to be exceedingly clear about the platonic nature of our work. We use terms like “affectionate”, “warm”, “nurturing”, “soothing”, “relaxing”, instead of “desire”, “exciting”, “sexy”, “attractive” or “romantic” -- see the difference? All this to make sure that we are on the same page regarding what our service entails.
Personally I really appreciate that kind of emphasis. Something I love about platonic cuddling is that it is safe; it's a precious thing to have an environment of closeness, intimacy and affection with no sexual overtones at all.
All that to say ... think carefully about the message your profile photo might give people. If it features a lot of cleavage, visible underwear, etc. (or bare chests for men), it starts to wander away the "platonic" realm.
My own reaction to those kinds of photos is sometimes: "In spite of how beautiful they are, I would hesitate to cuddle that person," just because of the kind of message it gives.
I suspect sometimes professionals might be wanting to attract more clients by using these kinds of pictures, but the clients they attract might not be the most desirable kind anyway if what drew them was the suggestion of something sexual.