OMG, I do an image search for gingham frock, and there are two entries -- one for a teddy bear, and one for an... adult costume shop, I'm assuming? One of the categories was sissy dresses, and I can't tell if the person modeling the dresses is male or female. I think male, cuz that's definitely a wig.

Which, yanno, is amusing, cuz I was looking for the frock for a specific purpose: the weird dream in ... oh, why can I never find the files... Aha! The second part of Begins In Confusion (one, two) by [info]derryderrydown has a line stuck in my head. That night, he dreamed of Batman in a pink gingham frock, skipping through the fields.

A bad copy/paste version will be posted soon, and I'll draw it... later.