Gaming

This kind of thing is fairly common in gaming. I stopped giving my Skyrim kids new outfits because, the way the game would handle it, the character would unequip their previous outfit and then equip the new one. On a fast PC, it happens instantly, or near enough that you would not notice. However, on the Xbox 360, or a potato PC, there are a couple of seconds where the character appears "nude" for a second or two.

To qualify the "nudity", all Skyrim kids have the same body and face. There are hair types and they are gender-specific, and that's how you get boys and girls. Both have painted-on underwear. "Panty" style with a tube-top "bra" for girls and "boxer briefs" style for boys. The child outfit comes in four colours (IIRC) and is also gendered. It's a dress for girls and a shirt and pants for boys. In both cases, the top is coloured and the bottom is grey, IIRC.

A simple solution would have been for the "nude body" to include the outfit in white. But hey, what do I know? I am not a programmer.

Another solution would be to stop using the adoption system entirely. Nothing forces you to have kids in the game. Of course, we're all still going to adopt off-brand Aerith, right? (If you don't know, just keep an eye out for a girl in a red dress selling flowers. She's in Windhelm, where the Stormcloaks operate out of.)