For most babies, their first words are usually mummy or daddy - but that certainly wasn't the case for Prince Louis.
According to his mum, the Duchess of Cambridge, the now three-year-old had much more unusual first words - and it was all down to her love of baking.
Appearing on BBC baking show for a Christmas special in 2019, Kate revealed that her youngest child's first words were "Mary Berry".
Kate appeared on the show called A Berry Royal Christmas alongside Mary and her husband Prince William when she said that Louis was learning to speak using the books on her bookshelf.
She told the TV cook: "One of Louis’ first words was ‘Mary’ because right at his height are all my cooking books in the kitchen.
“And children are really fascinated by faces, and your faces are all over your cooking books and he would say, ‘That’s Mary Berry’. So he would definitely recognise you if he saw you.”
Louis is currently following in his older sister Princess Charlotte's footsteps by attending Willcocks Nursery School.
The nursery, which costs £14,000 a year to attend full-time, is located just a stone's throw from Kensington Palace.
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Next year, once he has turned four, he will join Charlotte and brother Prince George at school.
Due to his tender age, Louis has only made a few appearances in public - and has yet to go on a royal tour.
However, he clearly likes to keep his parents on their toes as Kate revealed earlier this year.
In May she said that Louis had grown "so big now" and is so fast on his scooter that she "can't keep up with him".
The mum-of-three shared details of the family's private life at Kensington Palace during a phone call with brave four-year-old Mila Sneddon, who is undergoing chemotherapy for leukaemia.
In April, she also released a photo of Louis to mark his third birthday, showing him smiling on his bike.
The young royal beams proudly as he clutches the handlebars of his bright-red balance bike.
The image was taken just before Louis left Kensington Palace for his first day at nursery.
