With Beyonce's younger sister quitting the family business and Kim Kardashian being named the highest earning reality star - you've got to wonder whether there is sibling rivalry brewing underneath their big smiles and sisterly signs of affection...
Check out these famous sisters...
Beyonce and Solange Knowles - Younger sister Solange has lived in the shadow of BeyBey and the Destiny's Child supernova since she was young - but has been working in the music industry since she was 16 and has released two solo studio albums and penned a third. Solange recently penned Beyonce's song 'Why Don't You Love Me'... Beyonce is happily married to hip hop mogul Jay-Z and has a hugely successful solo career.
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