I posted a few book choices as good visual aides in understanding the underlying musculature and perspective of the human form, mostly male.
Now on to the females!
This may be kind of silly, but the poses are great and the price is cheap!
If you go to http://harpydigital.com/ and click on the CD collection, you will come across a series of nude collections. These are old photos, but they're great to study from (from a classical rendering point-of-view). The poses are fun and the scenery is slick too! The cds are very cost effective.
There are also some slick photos of gargoyles too.
The Harpy Digital site is a family run site with some friggin' killer shots of bugs and beetles - see http://www.living-jewels.com/ .
The site is a little slow today, so bear with them. It's worth getting in and checkin' it out.
Draw on everyone!