Royal couple were in high spirits for the ceremony in Scotland.
Four-year-old tot did "well" on his big day at Thomas's Battersea.
Royal experts are criticising the Suits star's recent interview with Vanity Fair.
Four-year-old's father, Prince William, accompanied his eldest child to Thomas's Battersea.
Royal commentators claim that the timing is surprising as William's workload is set to increase.
Long-lens paparazzi shots of the Duchess of Cambridge were taken in southern France in 2012.
Suits actress spoke candidly about the serious romance to Vanity Fair.
Verdict will be reached today (5 September) after five years since the photographs were taken.
Brenda from Bristol reacts to Royal baby news: "You're joking... another one!?"
Bookmakers Paddy Power are offering 20/1 the new royal offspring will be named after its late grandmother.
Symptoms, causes and treatment of the most debilitating form of morning sickness.
Royals are parents to Prince George, 4, and Princess Charlotte, 2.
Local resident claims she walked through Thomas's Battersea halls unchallenged just days before term starts.
The step will follow a lengthy marriage process, and the princess will lose her royal status after the wedding.
Lyndsay Simpson wrote a letter to the Queen asking if she could borrow a swan to keep as a pet.
Duchess of Cambridge's sister tied knot with hedge fund manager in May.
Nick Serpell has said he is 'bored' with the 20th anniversary coverage.
The royal couple are already parents to one-year-old Prince Alexander, who was born in April 2016.
Tot is having great fun learning how to dance, which was one of her late grandmother's favourite hobbies.
The former Egyptian playboy was travelling with the Princess of Wales when their car crashed in Paris.
Princess Diana was the most photographed woman in the world, yet some images of her have rarely been seen.
Duchess of Cambridge was in high spirits in the White Garden with her husband and brother-in-law.
Four-year-old starts at Thomas's Battersea in London on 7 September.
"I still feel very angry that we were not old enough to be able to do more to protect her."
Princess reportedly said: 'My God, what's happened?' before suffering a cardiac arrest.
Café Diana, located in Notting Hill, was frequented by the People's Princess.
Lana Marks pulled out of a four-day holiday to Milan which prompted Diana to travel to Paris with Dodi.
Royal commentator Richard Fitzwilliams explains why the princes are being so open about their late mother.
The princess's sons will remain out of public sight in Balmoral on the anniversary.
The royal had his arms wrapped around the Suits star.