The former Suits star toted a fashionably minuscule white clutch as she strolled hand in hand with her real life Prince Charming.
Harry, 34, clasped his love's hand as walked slightly ahead of her wearing a formal black tuxedo, grey suit trousers and a bright blue tie.
Ms Adby captioned the previously unseen photo: "These two may have been guests at a wedding I photographed last year!"
The stunning shot swiftly racked up 605 likes and received a slew of comments from users who remarked on how happy the newlywed royal couple looked together.
The Sussexes celebrated their first wedding anniversary last weekend, marking the occasion by sharing a collection of their own never before seen photos from their nuptials at St George's Chapel in Windsor Castle.
WATCH this video to see the stunning pictures!
It's been a busy month for the couple as they also welcomed their first born child, son Archie Harrison Mountbatten-Windsor, on May 6.
"It's magic. It's pretty amazing," Meghan told reporters about being a new mum.
"I have the two best guys in the world, so I'm really happy. He has the sweetest temperament."