It is very easy to get a personal icon on the neighbours tab rather than the default silhouette.
Your AC picture should now reflect your facebook profile which is the picture you want.
- Go to Facebook, open a 'trash' account that you don't mind AC posting to. The user name doesn't matter.
- Set up your profile with whatever info you want, and check your privacy options.
- For your facebook profile picture upload a picture that you want to see in AC as your icon
- Next time you gets stars etc in AC and it want to go to Facebook accept the invite and direct it to your new 'disposable' facebook account.
Your AC picture should now reflect your facebook profile which is the picture you want.