sara blakely jesse itzlerFacebook / SpanxSpanx founder Sara Blakely is a self-made billionaire.
According to the price-comparison website GoCompare,which analysed Forbes data from 1996 to 2015, there are some major factors to which most of the world's richest people seem to adhere.
Whether sharing the same star sign or having a certain number of children, there are some pretty weird common traits among the world's 1,826 billionaires.
Check them out.

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