Princess Charlotte, the daughter of Britain's Prince William and wife Kate, began her first day at nursery school near the couple's London home, Kensington Palace, on Monday.
In the pictures, the fourth in line to the throne is wearing a coat and scarf and what appears to be a rucksack.
It is rated outstanding by Ofsted and described by Tatler magazine as a "hidden gem".
"They thought it would be an ideal first step for Charlotte's education and they were impressed by the team who work there", said a Kensington Palace spokeswoman.
Princess Charlotte is going to nursery school!
Arriving in Berlin for an official visit June 2017
Kate, who turns 36 on Tuesday, and William will welcome a third child to their family in April.
Princess Charlotte has officially started at her prestigious nursery school, and her parents have marked the occasion as all parents do - with adorable photos. Pupils are split into four learning groups named after birds: Swifts, Swallows, Cygnets and Swans. It encourages "high standards, excellence and good manners" and has an all-female teaching staff. Though Charlotte looks a little more excited, the resemblance is evident.
The Willcocks Nursery School has classes for children ages 2 to 5 and includes activities such as poetry, acting, sports, cooking and music.
But it won't be all clay-pot making for Charlotte: she'll have to tidy away dress ups and put out milk for her classmates.
We can't wait to see how Princess Charlotte continues takes after Her Majesty as she grows up. "We look forward to welcoming Charlotte to our nursery in January".