There were a number of 'female BoB' fan-patches; Andy Hunter's is probably the most refined one I've come across thus far (it can be found at the Archives
; search for 'Babs Deluxe').
I originally came across one sprite in an old bungie.org holiday pic; Forrest mentioned the patch name after I asked about it at the Story Forums. This was drawn before I'd applied the patch and knew that BaB has longer hair.
(2019 edit: Fixed the link...although as of this writing, the Archives keep tossing up "access forbidden" errors. Let's hope that clears up...)