In reply to Clazza94:
The main benefit of a woman's harness used to be they came in better colours and with fewer gear loops, presumably so the little lady didn't have to worry her pretty little head about what the half-dozen superfluous loops on a chap's harness were actually for. I guess that may have changed over the years as crass gender stereotypes went out of fashion, hopefully along with 10 loop harnesses!
Also they say the 'rise' is bigger from leg loops to waist band. Pretty subtle I suspect on many but for me it made the difference as I have a freakishly long back making me top heavy but I still tend to stay upright without effort in a female fit harness.
I suspect in otherwise like for like harnesses there's maybe a bit more spare waistband webbing so it can be pulled over hips onto a more pronounced waist than. Likewise, probably slightly bigger leg-waist ratio than for a the same male harness. And a little bit more fabric in the belay loop or the leg loop attachment.
jk