The Duchess of Sussex surprised tennis fans at the women's singles final of the 2019 US Open this weekend, as the new mother cheered on close friend Serena Williams from the crowd.

We earn a commission for products purchased through some links in this article.

Demonstrating her courtside fashion know-how, the 38-year-old paid tribute to her American roots in a £132 denim shirtdress by American label J. Crew - which has since sold out online.

What to read next
Duchess of Sussex at the 2019 US Openpinterest
Clive Brunskill//Getty Images
The Duchess of Sussex looked autumn-ready in a J. Crew midi dress

A pair of £195 Victoria Beckham aviators, her trusty Carolina Herrera 'Matryoshka' shoulder bag and £330 Jennifer Meyer gold turquoise earrings, which are still available to shop, were all that was needed to accessorise the look.

Shop our favourite high street denim dresses

Denim Shirt Midi Dress
M&S Collection Denim Shirt Midi Dress
Credit: Marks & Spencer
Denim Button Detailed Waisted Dress
M&S Collection Denim Button Detailed Waisted Dress
Credit: Marks & Spencer
Indigo Denim Shirt Dress
Dorothy Perkins Indigo Denim Shirt Dress
Now 41% Off
Credit: Dorothy Perkins
Lena Denim Shirt Dress
Boden Lena Denim Shirt Dress
Now 40% Off
Credit: Boden


In one last sartorial triumph, she draped a £135 cream-hued woollen blazer, also by J. Crew, over her shoulders to complete the autumn-ready ensemble.

Meghan Markle at the 2019 US Openpinterest
Gotham//Getty Images
The royal could be seen cheering from the crowd during the match

SHOP THE BLAZER

Though it's no wonder the Duchess of Sussex brought her fashion A game, as editor-in-chief of American Vogue, Anna Wintour, took a seat behind her.

2019 US Open - Day 13pinterest
Clive Brunskill//Getty Images
The Duchess of Sussex could be seen chatting to Anna Wintour ahead of the final

Upon arrival, Meghan gave Williams' husband, Alexis Ohanian, a hug and the pair could be seen chatting throughout the match.

Duchess of Sussex at the US Open Tennis Tournament 2019pinterest
Tim Clayton - Corbis//Getty Images
The royal was greeted by Serena Williams’ husband, Alexis Ohanian, upon arrival

The last time the Duchess of Sussex supported Williams was at Wimbledon, as she famously attended the women's final alongside the Duchess of Cambridge on July 13.

Duchess of Cambridge and Duchess of Sussex attend Wimbledon 2019pinterest
Karwai Tang//Getty Images
The Duchess of Sussex and Duchess of Cambridge attended the 2019 women’s final of Wimbledon in July

The royal mother touched down in New York for a flying visit on Friday, leaving Prince Harry to watch their four-month-old son, Archie, on her first trip to the city since her star-studded baby shower.

Though it won't be long until we see the Duchess of Sussex again, as she is set to make her debut post-maternity engagement in London on September 12 to launch her Smart Works charity workwear line.

Meghan Markle at the 2019 US Open