It's because their agents exploit them and put stuff in their food/drinks so they don't grow, see the Malcolm in the Middle guy.
thats interesting cus frankie had some pretty epic hair
though tbh it doesnt look like he is balding to me, just wearing it shorter...but im surprised these popular celebs with expensive *** stylists don't know about the big 3...
but he sure looks really old now, makes me feel old! btw i also heard he suffered 2 "mini strokes"?
