Queen Elizabeth—she's just like us! Kind of.

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Queen Elizabeth only wears this one shade of $9 nail polish
Credit: Getty Images

This story originally appeared on ThisIsInsider.com.

Queen Elizabeth has some very specific habits and rituals, including sipping a glass of champagne before bed each night. But when it comes to nail care, Her Royal Majesty is especially keen to a particular hue of pink.

Queen Elizabeth only wears this one shade of $9 nail polish
Credit: Amazon

Essie's iconic Ballet Slipper nail polish isn't just a favorite among beauty bloggers, brides, and supermodels , it's also the only color the Queen will wear on her nails.

According to the brand's website, Queen Elizabeth's hairdresser wrote a letter to nail polish-mogul Essie Weingarten in 1989 requesting a bottle of the classic shade as she refused to wear any other.

Ballet Slippers is an understated pale hue, just subtle enough to hide beneath the Queen's gloves when she's greeting and hosting world leaders. But Her Royal Majesty isn't the polish's only influential fan.

The universally flattering shade has developed somewhat of a cult-following in the beauty world. Supermodel and former Victoria's Secret Angel Karlie Kloss once named it as her summer-must have. The polish even got a shout out by Meryl Streep's character in " The Devil Wears Prada ."

An endorsement from an angel and a queen? Not bad, especially at $9 a bottle.