I am willing to speculate that some children are born with gender identity however I can not accept a loving mother posting a picture of her male child dressed as a girl on the internet.
Unless these mothers are totally clueless of male peer pressure, male bonding rituals and the formation male community orders of hierarchy they could never do this to their male child.
Anyone who is at all knowledgeable of how the internet disseminates information must know that these pictures will be available to anyone who wants to retrieve and view them until these boys are long past dead (which conceivably could be by their own hand thanks to these pictures).
I sure agree with you there, unless it was so discreetly done you would never recognize the lad.