Too many men with women avatars here.

[Maxpphire]

not that you can tell from any of the oblique angles
and not that digit ratio is 100% accurate

but sure let's go with that

Well the sailor one kinda shows it.
Basically if you are a girl your index finger will naturally be longer then your ring finger and vise versa for males.
However some people do have both the fingers be the same height.

[The KKM]

It's not so much a question of being "girl" or "man", it's because of the balance between oestrogen and testosterone you had when you were a foetus. I've met men with a longer index, for an example.

[water dog]

im convinced she was never a man and met is just a retard

[Chutzpar]

not that you can tell from any of the oblique angles
and not that digit ratio is 100% accurate

but sure let's go with that

Well the sailor one kinda shows it.
Basically if you are a girl your index finger will naturally be longer then your ring finger and vise versa for males.
However some people do have both the fingers be the same height.

nope.
Theres a trend for that, but that isn't to say that any woman with a longer ring finger has A TERRIBLE SECRET.

[PrettyNier]

height.

length

[Vipershark]

im convinced she was never a man and met is just a retard

[Vipershark]

not that you can tell from any of the oblique angles
and not that digit ratio is 100% accurate

but sure let's go with that

Well the sailor one kinda shows it.
Basically if you are a girl your index finger will naturally be longer then your ring finger and vise versa for males.
However some people do have both the fingers be the same height.

...my index fingers are longer
i've had a vagina all this time and didnt even know it

[water dog]

viper there are plenty of pictures of her reading manga she must be perfect for you

your little asian star

[Cobalt Blue]

huehuehuehueheueheuehueheue -1up 20XX