In a video filmed by a fellow trick-or-treater and posted to social media, the family-of-four were seen walking down a tree-lined street with their backs to the camera.
Prince Harry donned a black cap, black pants, a grey sweatshirt and white sneakers.
The 39-year-old was spotted adorably holding his four-year-old son’s hand and carrying Lilibet’s candy bucket.
Archie was dressed in a black and white costume, suspected to be a skeleton, which he paired with white shoes. He was holding his own Halloween pail.
Meghan Markle was dressed casually in a black cap, black t-shirt, navy blue pants, white sneakers and accessorised with a cream tote bag.
The former Suits actress was carrying her two-year-old daughter, who was dressed in a billowing pink costume.
The royal couple first celebrated the spooky holiday together in 2016 at a Toronto Halloween party with Harry’s cousin Princess Eugenie.
The royal couple first celebrated the spooky holiday together in 2016 at a Halloween party in Toronto with Princess Eugenie and Jack Brooksbank. Picture: Netflix.
Loading embed…
Meghan donned a vintage pilot cap and goggles while Harry wore a bandana and a gas mask.
Reflecting on the party in their Netflix docuseries, Harry explained the gathering happened just before they went public with their relationship.
Not wanting to tip the tabloids off before they were ready, they deliberately chose outfits that would disguise their identities.
“We went to this Halloween party where we could be completely dressed up and no one would know. I had a bandana and goggles,” Harry said.