Study: Women with more "male" hands are more likely to be lesbian

Researchers at Essex University looked at sets of identical twins where one of the siblings was heterosexual.

They found that the homosexual twin tended to have a greater difference between the length of their index and ring finger, with the difference most pronounced among women.

Previous research has indicated that exposure to the male hormone testosterone in the womb could be linked to differences in finger length and also to sexuality.