It's a classic. 

By Real Simple
Updated May 25, 2017
Queen Elizabeth II
2015 Getty Images
| Credit: Chris Jackson/Getty Images

This content originally appeared on Southern Living.

From dog breeds and chocolate cakes to handbags, Queen Elizabeth knows what she likes. That’s why we weren’t surprised to learn that the royal’s decisive nature also extends to beauty products. After all, we know what our own mama would say, “if it ain’t broke, don’t fix it.”

Her royal highness reportedly wears only one nail polish, a shade of pink from Essie called “Ballet Slippers” beloved by commoners and monarchs alike. The subtle hue is perfect for the well-heeled royal for three reasons: it complements even the most bold of her monochromatic ensembles, it’s soft enough not to show through her white gloves, and most importantly, it will never go out of style.

According to Essie, the queen has been a fan of the polish since before 1989, when her hairdresser sent the company a letter requesting a bottle of "the only color Her Majesty would wear." It’s also the go-to polish for our other favorite royal, Kate Middleton.

Queen's Favorite Nail Polish

The best part? It’s available nationwide for just $9 a bottle.