Forbes unveiled its ranking of the richest women in the world in 2011 after keeping keen observation on their moves such as the deals they negotiate, their real estate transactions, their luxury purchases and the causes they give to.

The 20 richest women in the world accumulate more than $232 billion. One common trait in most of these women is that their wealth was inherited.

Here is a slide show of the world's 10 richest women in 2011