Well, you got Macaulay, but its not Demi Lovato..
I know what you mean about not having much to go on, though little mr. Culkin totally obliterates the girl... I have a "hint" photo prepared where it's just his eyes.. Her nose, her mouth, and I still have a hard time seeing it.. I'll see if I can get another guess or two then if need be bring out the hint photo
Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum ingens et proiciam.
(I have a catapult. Give me all your money, or I will fling an enormous rock at your head)