I think I can answer this now. Halle has smaller bones than Kerry, although Kerry is stick thin from dieting and less curvy than Halle. Halle has smaller face, hands, smaller waist, smaller feet , because she is naturally petite. Kerry is bigger boned but appears smaller because of her proportions (her head compared to her body). That should explain it. Genetics, period.
A 7.5
8 in men = 9.5 in women
He has shoe size 11
Wear 4 pairs of socks.
the shoe size is 11
she wear a size 10 shoe
He wore shoe size 15.
he wear a size 24
Well, if your shoe size is seven, then you can physically wear them. However, it is uncommon to have that shoe size at that age (it is possible though).
a a size 50 in men
Manute Bol's shoe size is 16.5.