If you buy a black wig for him paint his face white with face paint then maybe give him high heal or pumps to wear on his feet you could buy a long white or red robe or a long dress maybe his mums old dress and just cut the bottom of to suite the length he needs. You should also, spray perfume on him and tons of make up.And you can add jewelry to spice things up.!
Ask her for help and she will help you buy clothes or let you borrow hers.
just make yourself look sexy
a ten year old girl should where something she likes for halloween, but you also have to make sure that she doesn't look like an eighteen year old, so it should be appropriate.
you can get loads off Halloween sweets that look like horrible stuff, pumpkins , water with red food coloring. Some people enjoy Halloween cakes and cupcakes that have colorful decorations. You can make them look like spiders, have cobweb icing or look like pumpkins.
Put your shoes on your knees
You can find Halloween themed recipes from food bloggers that post their recipes and ideas and look for a Halloween themed post. They will make cute things like cake pops.
You can wear baggy jeans and a loose shirt. And maybe wear like a plaid short under the baggy jeans. You can also get those ghetto hats and wear them.
There are several ways to make an easy Halloween costume for kids, such as cutting two eye holes in an old white sheet to make a child look like a ghost. Alternatively, use toilet paper rolls to make a child look like a Mummy.
get ideas here http://www.allfreecrafts.com/halloween/index.shtml hey girl what are you doing
Change their sex
Your Hat Mask
Just look like a girl & dress like a girl. They'll find you.