The Duchess of Cambridge was unable to join her husband, Prince William, Duke of Cambridge, as he took Prince George to his first day of school on Thursday because of.
The 4-year-old prince started at Thomas's Battersea, a private school in south London, marking a new chapter for the family as they settle down in the country's capital.
Kate is currently less than 12 weeksand suffering from hyperemesis gravidarum, a condition which she had during her previous pregnancies.
The prince, who is believed to be one of the youngest in his class, will spend his first day of school getting to know his teachers and peers.
Prince William attended his first day at Wetherby School in London in 1987. His mother, the late, dropped him off.