You can tell that today's Powerful Image works out and obviously has great quads and glutes, but you can't really see her upper body enough (I'm not trying to complain, just pointing it out)
This is my all-time favorite Powerful Image, from early June. I think she has the perfect body, yet very attainable. Her website says that her favorite exercise is deadlifts and it shows. I find her very motivating, yet I remember all the guys found her very sexy too.
Remember though, it doesn't mater who gets posted, she will appeal to some women as motivating, and not others. The girl I liked will be too big for some women, not big enough for others.