If the Duchess of Cambridge has learned anything from Cruella de Vil, it's that a good coat makes the outfit.

Today, Kate and her husband, Prince William, hosted a private drive-in screening of the upcoming Disney film Cruella at the Palace of Holyroodhouse in Edinburgh. The event was set up for National Health Service (NHS) staff and employees, to recognize their vital and tireless work amid the ongoing COVID-19 pandemic. The Cambridges arrived at the venue in a 1966 2A Land Rover, which previously belonged to William's late grandfather, Prince Philip, and was loaned to the couple for the evening by Queen Elizabeth II.

For the private premiere, Kate wore a timeless blue plaid trench coat by Holland Cooper, layered over a beige midi skirt and paired with emerald-green suede pointed-toe pumps. The duchess tied her hair up in a chic, voluminous ponytail and accessorized with sapphire- and diamond-encrusted earrings that coordinated with her stunning outerwear and her famous engagement ring, which previously belonged to her late mother-in-law, Princess Diana.

Kate also prepared a speech for the evening, addressing the crowd of NHS workers to thank them for their "dedication, commitment, and personal sacrifice" exercised during the global health crisis.

Ahead of the special screening, William and Kate also had a conversation with Cruella's leading stars, Emma Stone and Emma Thompson. During the call, they all discussed what it was like filming in parts of London, the amazing costuming and fashion, and how important it was to honor and thank the incredible NHS staff across the United Kingdom.

Watch their conversation below.

Bianca Betancourt is the culture editor at HarpersBAZAAR.com, where she covers all things film, TV, music, and more. When she's not writing, she loves impulsively baking a batch of cookies, re-listening to the same early-2000s pop playlist, and stalking Mariah Carey's Twitter feed.