I brought it up one day while we were talking about our fantasies. I mentioned how turned on it would make me to know other people were getting off on pictures of her. That's about all it took for me...
Good luck!
P.S. - Not to sound mean, and as much as I want to see more of that rockin' body of hers (seriously!!!), DO NOT POST WITHOUT HER PERMISSION!! It's not right, you will regret it, and no one here will respect you for it.