Shop Kate Middleton’s easy, breezy polo style with similar striped frocks to her off-the-shoulder Zara dress.

Supporting her hubby Prince William at the Maserati Royal Charity Polo Trophy this past weekend, Kate Middleton outdid the rest with her chic summer casuals, per usual. Though the Duchess has access to the best of the best in fashion, even she can’t deny that Zara kills it when it comes to summer dressing, wearing a simple striped sundress from the budget-friendly retailer while celebrating the Queen’s official birthday.

This ruched-bodice, button-down frock is among one of our all-time favorite Kate Middleton looks, and the $70 price tag makes it all the sweeter. In unsurprising news, this off-the-shoulder, button front dress is already sold out after mere hours, but we’re hoping for a restock soon.

Striped Off-the-Shoulder Dress, $70, Zara

Until then, we pulled nine similar styles that the Duchess would definitely flaunt. Shop our Kate-approved picks to steal the royal’s effortless summer style.

Chambray Butterflies Midi Dress, $98, Free People

WhoWhatWear Sleeveles Belted Mock Neck Midi Dress, $35, Target

Bp. Stripe Ruffle Wrap Dress, $55, Nordstrom

Madewell Shimmer Stripe Cutout Midi Dress, $138, Nordstrom

Suncoo Striped Midi Dress with Tassels, $205, Asos

Only Stripe Midi Dress with Cutout Back Detail, $48, Asos

New Look Stripe Bardot Sundress, $29, Asos

BB Dakota Tailyn Midi Dress, $120, Shopbop

Tahari Sleeveless Stripe Seersucker Shirtdress, $138, Nordstrom