Sakura Kawamine is a top heavy Japanse AV idol (born 1986) with slightly nerdy looks. She started her career in 2007.
Viola Crush is a very top heavy young lady from Ukraine. She sure knows how to please booblovers as she takes her time to release her big boobs by slowly jiggling them out of her top and bra. Her cleavage prior to that is quite spectacular too :P