http://en.wikipedia.org/wiki/Pantomime
Having said that, I wouldn't hit on him...
The 'only' reason why any note is taken of this is because this involves a twelve year old child, still very much in his formative years, and that it takes place in an era where there is indeed a very powerful political and social homosexual agenda which has, among other things, targeted very young children for indoctrination at minimum and grooming at worst
In a past, gentler time, by all means such a thing as this could easily be laughed off as merely a child havng fun, and I have no doubt that this child is indeed having fun. But to stop there, in this day and age, and to not consider the larger implications of this is, I believe, not considering the entire truth of the matter.
One may naturally ask, what if there is an eight year old drag queen contestant next year? What if this becomes a popular social phenomenon? One could certanly expect to be labeled a 'homophobe' at minimum by the various Leftist and homosexual pressure groups if one dared to encourage children "away" from such a phenomenon if it were to become popular. Any voices of opposition would be shrilly shouted down as "trying to interfere with a child's chosen gender identity".
What if schoolteachers were to actively encourage this sort of activity among boys? Again, any dissenting voices would be labeled "homophobic" and legislated into silence.
Numerous additional questions can and should be asked in an era where the homosexual lobby has become so very powerful and it has already inserted itself into academia at all levels, with one goal being of making children very open and accepting of it despite what a parent may wish.
This particular child may well turn out just fine in his later years but if he doesn't, people will naturally wonder if this dalliance with extremely public ... and enthusiastic, publicly-encouraged cross-dressing during his most formative and impressionable years may have had something to do with it.