You Won't Believe How Much the World's Richest Heirs and Heiresses are Worth

Ally Hilfiger, $400 million

Ally is a socialite and heir to the Tommy Hilfiger fortune. The brand is an American classic when it comes to fashion. Her childhood was "ravaged" by her struggle with Lyme disease, and today she is an author and activist who spreads awareness about the disease.

The More You Know

People don’t sneeze in their sleep due to their brain shutting down the reflex.
The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
The word "muscle" comes from a Latin term meaning "little mouse."
There's a shrimp-like creature that makes aluminum armor to protect itself.

Post originally appeared on Upbeat News.