Seems to me you'll also need a wig to supply some "girl hair," if I remember correctly from the pics you've posted in the past. 
Best costume I ever had was when my GF and I went to some friends' party as identity thieves. We just wore black clothes with name tags that had our friends' names on them, along with 9 random digits arranged in social security number format. Sadly, not enough people really got the joke, but we enjoyed it nonetheless.
So far as I know, we don't have anything planned for this year's Halloween yet, which is at least a little odd, because it's her favorite holiday, but she's been pretty sick lately, and therefore not really able to be enthusiastic about much of anything.
-----
0.1 Albino Leopard Gecko - Tigger
0.1 Crested Gecko - Pooh-Bear