Prince George has started his first day at school – but his mother, the Duchess of Cambridge, missed the occasion as she was not well enough to take him.
The Duke of Cambridge dropped him off as Kensington Palace said Catherine, who is suffering from severe morning sickness, was still unwell.
The four-year-old is attending Thomas’s Battersea, an £18,000-a-year preparatory school in London.
His uniform includes navy shorts and jacket, long red socks and black shoes.
The milestone for the prince comes after the duke and duchess this week announced they are expecting their third child.
Catherine had to pull out of public engagements on Monday and Tuesday because she is suffering from hypremesis gravidarum, as with her previous two pregnancies.
Prince William drove his son through the school gates before helping him out of the car.
The duke carried Prince George’s bag and held his hand as the pair walked up to the entrance.
Father and son were then greeted by Helen Haslem, head of lower school, and the young prince shook her hand before being accompanied to his first class.
For boys in reception class, the outfit consists of a navy jacket, a v-neck jersey and navy Bermuda shorts.
In winter, this is accompanied by a red polo neck and long red and navy socks.
In summer, short-sleeved light blue shirts are required – which Prince George was sporting on his first day – along with navy ankle socks.
Ben Thomas, principal of Thomas’s London Day Schools, said there would be no special treatment for the royal.
“We are going to try and make this a really happy, safe and secure time,” he said.