Fetish ?

So my friend said she met a guy at a bar and she decied why not have a one night stand (shes recently divorced and its been hard on her seeing her ex hook up and move on while shes hurt so she decided to do it as well ) . so she tells me they went back to his condo and that before they started he took out a set of clothes and asked her to put it on that it turns him on. when she looked it was like children's clothing something a 12-15 year old would wear she said . she said she asked why he said its a "fetish"... She didn't sleep with him she texted me and i called like if there was an emergency.... But is that a real fetish i see it more as a warning signs that he might be a predator .... Because what man gets turned on by childrens clothing and my friend is very petite and her body does resemble a 14-16 year olds body, and having a trunk of kids clothing that made it even creeper....