Prince Harry and Meghan joined the Earl and Countess of Wessex in an Ascot Landau as they made their way to day one of the event near their wedding venue, Windsor Castle.
The last time the Duke and Duchess sat in an Ascot Landau was on their wedding day, exactly a month ago, on 19 May.
As is traditional, the Royal Family travelled in a series of carriages to the course which is on Crown land and has a long link with the monarchy.
The newlyweds received an eager welcome when they arrived at the event, which is popular with fans of the Royal Family and considered one of the events of the high society social calendar.
The Princess Royal and the Duke of York joined the Queen in the lead carriage and were followed by another carrying the Prince of Wales, the Duchess of Cornwall and Princesses Beatrice and Eugenie.
After the procession arrived, Meghan and Harry were pictured with his parents, Prince Charles and Camilla, the Duchess of Cornwall.
The Duke and Duchess of Sussex also presented the trophy for the 4.20pm race, the St James’ Palace Stakes, which was won by Frankie Dettori on Without Parole.
The horse was trained by John Gosden, and was on at 9-4 to win.
Meghan wore a black and white Philip Treacy fascinator, which shaded the top of her face, and carried a black clutch bag.
The Duchess was wearing a long cream shirt dress, with embroidery detail and a handkerchief hem, with a black belt, and chose black heels for the event.
It’s understood the dress is by Givenchy, the same fashion house that made her wedding dress.
Prince Harry wore top hat and tails, his name tag showing his royal title of the Duke of Sussex on his lapel.
Although bookies predicted the Queen would wear a blue hat for day one, she came dressed in yellow, offset by a light blue flower.
Racegoers often wear big and bold hats on the first day of the races at Royal Ascot, and this year was no exception.
Kensington Palace announced that Prince Harry and Meghan would undertake a two-day royal visit to Dublin on 10 and 11 July, “at the request of Her Majesty’s Government”.
The pair said they were “looking forward to learning more about Ireland’s history and experiencing its rich culture, as well as meeting the people who are shaping the country’s future”.
It will be their first royal engagement abroad.
Last week, Meghan made her first official appearance with the Queen, as the pair attended a number of engagements in Chester.
They appeared to be very comfortable in one another’s company, sharing jokes and a laugh during the day’s events.