Pandrogyny
So, it's totally okay to starve yourself or whatever you plan to do to get down to a ridiculously unhealthy weight that you think is attractive, even if it means your body is going to be weakened by it and very unhappy with you? rolleyes
I can tell you right now, if you are over 13 years old you should NOT weigh less than 100 pounds.
I'm 19 years old and I weigh between 92-95 lbs, because guess what? That's just how I am. My body doesn't gain weight easily, and besides, I'm only 5 ft tall. It's not like I'm 5'7 and 95 lbs. I don't have bones sticking out of my body. When I look in the mirror before I take a shower, I don't see my rib cage at all. Also, genetics and small bones plays a big part in how much I weigh.
Also, if someone is 4'9-4'11 and they're over 13 years old (because one of my friends is only 4'11), then being in the 90s range is okay, since a lot of BMI charts say that being in the 90s is in range of a normal BMI.