It's What He Wanted
Tragically, the groom insisted on wearing a suit of armor for his wedding. The bride wasn't interested in that. Getting married means making compromises, though, so the groom decided to only don the arms.
Under where?
The last thing this little kiddo wanted to spy was his aunt's wedding undies! To be honest, this is a wild photo to be taken anyway. It's not very flattering nor is it adorable, so that little man's reaction seems just about right.