Several follow-up snaps, which were posted to Twitter, also show the contents of the cardboard boxes, which included an array of delicious offerings from Angie's Little Food Shop.
“A big thank you to @SarahTheDuchess, Princess Eugenia and their team for a delicious supply of healthy lunches,” the caption stated.
Eugenie and Jack’s goodwill deed comes after they recently celebrated their 10th anniversary together.
“Jack and I are celebrating our 10th anniversary today... and we are lucky enough to be together at this time,” Eugenie captioned the snaps.
“If anyone has an anniversary this week, if you are together or not because of this challenging time, if you are a frontline worker wishing to tell your person you love them, then please do send me a photo and message via DM of how you are celebrating and I will share your messages on my story over the next few days,” she added.
Enthusiastic fans were quick to comment on the post, with one person writing: “Congratulations to you both. Wishing you so much happiness and joy!”
“You guys have been together for 10yrs???? And one year married??” another fan quipped.
A third person added: “Happy Anniversary to Your Royal Highness and Jack. Sending love, support and good energies.”