Glad to see that people like her!
And yeah, I had a lot of trouble getting the face and the body correct. I find that if I don't exaggerate features a lot, all of my characters look too man-like. Female hips are especially bad.
I used
this (Not safe for work, school, minors, Christians, or the easily aroused) as a pose, which wasn't quite what I wanted, but the best I could find after painstakingly examining hundreds of playboy photos. Hey, it's hard research, but no one said that being an artist was easy.
EDIT: BIKINI'D, to comply with forum rules. Sorry about breaking them!