NEW YORK (TheStreet) -- When it comes to displaying wealth, some of New York's richest families have taken things to outrageous levels.
In Simon & Shuster's (CBS) Primates of Park Avenue, social researcher Wednesday Martin describes the culture shock she experienced when moving with her husband and young son from New York's West Village to the lavish Upper East Side.
Two zip codes (10065 and 10075) in the Upper East Side neighborhood hold the fourth and fifth spots on the 2014 edition of Forbes' annual list of America's most expensive zip codes, with the median asking price of a property at roughly $5.9 and $5.3 million, respectively. But that's chump change for the type of lifestyle Martin and her pals were accustomed to.
Here are ten jaw-dropping ways Upper East Side residents flaunt their wealth, according to Martin's book.
1. More Kids = More Money
Martin found that families with more kids tended to be wealthier. Five kids is much more expensive than two, especially when you're paying five-figure tuition - for nursery school.
"Five was no longer crazy or religious -- it just meant you were rich," she wrote.