Currently Being ModeratedNov 6, 2011 8:45 PM (in response to JooLeeAnhV)
Open iPhoto then open your address book select the address you would like to add the picture to the drag it from iPhoto to the picture icon in your address book.
Currently Being ModeratedNov 7, 2011 6:13 AM (in response to JooLeeAnhV)
I did it like this: First, you should have assigned names to Faces in iPhoto - these names should match the respective ones you use in addressbook (like John Smith each time, not John Smith in iPhoto and Johnny S. in Addressbook). Then, in Addressbook, double-click the square for the photo as you did, but then do not click on Choose but rather on the small Faces icon on the bottom of the popup window. Addressbook should now provide you with all the "faces" iPhoto has for this name.
Currently Being ModeratedAug 2, 2012 1:10 PM (in response to norbertfromvienna)
How very un-apple-like. Maybe next version we'll have to do two full spins in a circle, get down on one knee (like a certain football star) and then it'll work!