Celebs looking like sis, bros, mum-daughters....

Skandar Keynes / Jason London


Hilary Duff / Kat Dennings


AJ Michalka / Kate Hudson


Leighton Meester / Megan Mullaly


Michelle Tratchenberg / Miranda Cosgrove


Jamie Oliver / Duncan James of Blue


Jeremy London / Brendan Fraser


Leelee Sobieski / Helen Hunt