Avatar Psychology : What does your avatar say about you?
Seductive female avatars:

People  usually choose seductive female avatars in forums and chat-rooms to draw attention to themselves. This can usually works very well.  Male users, especially guests, quickly flock to a sexy female form. The owner may be interested in harmless flirting, or (less frequently) be advertising his or her availability for cybersex. Some people wearing seductive avatars wish to be admired as an attractive, sexy individual, without necessarily being interested in flirting or cybersex.  Pay attention to the type of Avatars used by others as they usually say more about that individuals personality than they often realize.
Female seductive avatars tend to be more common than male - although these female avatars sometimes are "manned" by male users (see "Male Gender-Switching in Cyberspace") . In fact, the general impression among members is that males are more likely to prop up as females, especially seductive females, than women dressing up as males.