I like #4, the naughty schoolgirl, but that's just me. Obviously the cleopatra burka is more popular because it's sold out. I've always thought that there must be something sexy about a musky Arab woman who spends all day under a black tent -- but I can't figure that out. Maybe you have to be a Muslim man to appreciate it.
I'll admit to a weakness for ##s 1 & 5. I formally deny any interest in # 4 whatsoever.
I can't see the entire costume for #6 because the "New" sign obstructs so much of it. Is it a fishtail burka?