Most of my clients are women.  They always have been.  It's just the nature of the business.
I always do weight training with my female clients.  It's the best way of getting rid of fat and keeping it off....full stop.

One of the first things that they say to me is that the don't want to get 'big and muscley'.  Some take quite a bit of convincing that they won't turn into Mrs Arnold Schwarzenegger overnight just because they've hit the weights for an hour.

The fact is that women simply don't have the physical and hormonal make-up to get 'big and muscley'.  Their testosterone level is simply too low.  Obviously, there are exceptions (Fatima Whitbread springs immediately to mind), but 99% of women will tone up, look better, feel better, have better posture and carry less fat if they do regular weight training.

Take a look at the link below.  She's pretty hard-core by any standards, but she's living, breathing proof that you can train hard and still look feminine.

http://www.facebook.com/home.php#!/ZuzkaLight