I hate to sound like a prude again about very, very young kids wanting to crossdress, or become the other gender. Some of these kids I see in the pix (and a few I didn't post) are barely are old enough to walk & talk. They're far too young to allow them to decide their own gender yet, or have somebody decide it for them. Gender should not be encouraged or discouraged either way at such a young age. To a pre-schooler, or young grade-schooler, there may be many reasons, or advantages that a young child may see in being another gender, other than it being a real gender identity problem.
Encouraging a child in a fatherless household, or household dominated by women (and girls) to be less masculine, & more feminine, is feminization. A mother, aunt, grandmother, or even a sister may prefer the boy of the household be less masculine, & more feminine so they're more passive, quiet, or behaved. Some just prefer their boy of the house to be more cute & delicate (like as cute as a puppy or kitten in bows & ribbons).
In other cases they just don't like boys, hate boys, or hate the father, so don't want a real boy, or that particular boy in the house. They make it a mission to change the boy into something less boyish, or that don't resemble the father.
Allowing a boy to be a girl or dress like one in a household with few or no male role models at a very young age, is feminization. Encouraging it, treating them like a girl, & dressing them like one is forced feminization.
Petticoat punishment may not exist much anymore, but women turning their boys in the house into cute, less masculine, or more feminine, delicate kids (for whatever reason) is still very real.
Up until 8-10 years old, most boys aren't very masculine. It's not a gender identity crissis, it's just the way they are when they're young. The differences in gender behavior are few, & the border between the genders is still thin at that age.