Harry said his grandmother has since spoken of the fantastic welcome she received.
Wickstead, who is already a firm design favourite of Kate Middleton, made headlines in May this year after openly criticising Markle's Givenchy wedding gown and accusing the designer, Clare Waight Keller, of copying her.
Meghan Markle wore a pantsuit that means business.
Although you couldn't tell by watching her.
Del Potro scraps past Simon to set up Nadal clash
Novak Djokovic reached the quarterfinals for the 10th time with a 6-4, 6-2, 6-2 win over Russia's Karen Khachanov . Juan Martin del Potro powered through to only his second Wimbledon quarter-final after beating Gilles Simon .
Over on the accessories front, Meghan traded in her protocol-breaking £475 Strathberry midi tote for a £1,390 satin Givenchy clutch (yes, eagle-eyed fans will recognise the number from her Royal Ascot debut).
The royal couple visited Áras An Uachtaráin on day two of their first overseas trip together this morning after attending a garden party at the residence of the British Ambassador last night. She teamed the gorgeous gray long-sleeve crepe frock with swingy ruffle detail from Roland Mouret with black suede Paul Andrew pumps, Fendi peekaboo bag and Birks snowflake earrings, complete with a polished low bun.
For the second day of their "mini-moon" trip, The Duke and Duchess of Sussex visited the Book of Kells at Trinity College, Croke Park and the EPIC Irish Emigration Museum.
Not done there, the duchess then changed into a more casual ensemble for the couple's visit to the city's famous Croke Park to see some of the traditional sports of the country. Here, The Duke and Duchess will meet children and young people taking part in free coding workshops, and will also have the opportunity to talk to female tech entrepreneurs.