I have to say, I'm with Alpha and Cfred on this one. I really don't see what is "gross" or "disgusting" about a child not wearing underwear as long as they have pants on. I certainly wouldn't allow a child to come ina dress or skirt with nothing underneath and if pants are falling off and her bottom is sticking out, then I would ask for either underwear or pants that stay on (like leggings) so that she is not sitting on things with a bare bottom. Otherwise, I really don't know why it would be an issue.