Kate Middleton and Tinsley Mortimer Have This One Random Thing in Common

One is the unofficial princess of New York's social scene, the other is the (very official) Duchess of Cambridge. But — though they inhabit different continents and speak in different accents — The Real Housewives of New York's Tinsley Mortimer and Kate Middleton have something in common.

As you may have noticed, both women have shiny, lustrous hair that could make fairytale princesses weep. And, as it turns out, they lean on the same product to seal in their expert coifs.

We've known for a while now that Tinsley uses L'Oreal Paris' Elnett Satin Hairspray, which is why we're already addicted to the stuff. Not only can it be found in almost any drugstore, but it could bring us this much closer to having locks like Tinsley's. Plus, the product not only has a long-lasting hold: It also adds shine, and is mercifully fragrance-free. 

And, we just learned that Middleton spritzes on the very same stuff! Though she has since deleted the post (you know: privacy, royal protocol, etc.), stylist Amanda Cook Tucker recently shared a snap of what she packs to tend to Middleton's tresses on a royal tour. And lo and behold, the Elnett spray made the cut. 

Yes, that's right: the Duchess swears by a product that can be found at Walmart — so why shouldn't you?

Shop the surprisingly affordable product, below. 

The Real Housewives of New York City airs Wednesdays 8/7c.