Most of the time, camel toe is rarely the extreme you see on certain websites; it's more subtle than that. Most of the time, camel toe is caused by wearing pants that are too big—in one specific area—making a reciprocal area too small. It's an engineering problem, not a weight problem. In fact, here's a skinny mannequin. If she's got a camel toe, everyone else will too.
2006 April 21, Kathleen Fasanella, “Anatomy of a Cameltoe, part 1”, in Fashion Incubator, archived from the original on 2015-10-16