They include Kate's cousin Lucy Middleton, Nicholas van Cutsem, whose daughter was a bridesmaid at the wedding of Harry and Meghan in May, and Guy Pelly, a childhood friend of William's.
The young prince, watched on by his older brother George, four, and sister Charlotte, three, was baptised using water from the River Jordan.
THE Duke and Duchess of Sussex will arrive in Dublin today for their first official royal engagement overseas as a married couple.
Harry and Meghan Duchess of Sussex leave after the christening service. The dress was belted and featured a boat-neck neckline, a favourite silhouette of the Duchess's. The stylish royal completed the look with matching accessories via a statement hat from Stephen Jones, suede Manolo Blahnik pumps and coordinating clutch - pulling off the monochrome trend in the chicest way.
At her first royal christening, the former "Suits" actress gave a nod to her US roots by wearing an olive-toned design by popular American designer Ralph Lauren. The Duke of Cambridge wore a classic navy suit with white shirt and blue tie.