WATCH: Harry and Meghan release first pictures of Archie's christening
The Duchess of Sussex sported a fine gold, 18-karat, $410 "A" necklace by Sydney-based designer Emma Swann of Verse Fine Jewellery.
Since that fateful day, the London-based Australian designer behind Meghan's declaration of love has seen sales soar.
“I’ve had an avalanche of orders since this went online, with people wanting initials for various reasons, many with hearts, for their children or partners – and some christenings, which is lovely," Emma said.
“Meghan is modern, fashionable and always on-trend, and personalised jewellery is the biggest trend right now.
"It's all about sentiment and love, which people adore, and to see her wearing the necklace is amazing."
Emma, who runs her company from a small workshop in Sydney, also gifted the former Suits actress a gold necklace with the initials “H” and “M” on it when the couple were Down Under for the Invictus Games.
"I’m such a royal fan … Hopefully she’ll wear that one soon too," Emma said.
“It’s wonderful to see how she embraces fashion and doesn’t always fit the ‘royal’ mode."
Meghan is not the first celebrity to wear one of Emma's designs with Victoria's Secret model Georgia Taylor and former Home And Away star, Kate Ritchie, also fans.
Emma trained at Central St Martins College of Art and Design in London, where other alumnis include Alexander McQueen and Stella McCartney.