Kate Middleton Shares Sweet Childhood Photo Showing Prince Louis Is Her Twin

Like mother, like son!

On Feb. 4, Kate Middleton shared on Instagram a childhood photo showing herself as a baby with her dad, Michael Middleton, which was taken by her mother, Carole Middleton. Many fans quickly shared a similar thought: That the Princess of Wales and Prince William's youngest son, Prince Louis, 4, bears a striking resemblance to his mom.

"Louis is your TWIN," one user wrote, while another commented, "I thought this is Louis."

A third user wrote, "Awww this is such a very sweet picture. Louis looks so much like his mum."

Kate, who also shares with William son Prince George, 9, and Princess Charlotte, 7, captioned her post, "'Faces are a baby's best toy.' On Tuesday we launched #ShapingUs to raise awareness of the vital role our early years play in shaping the rest of our lives. This weekend, we'd love for you all to spend time with your friends, families, colleagues and communities talking about your early childhoods and how they've shaped your lives."

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She continued, "I hope you'll also consider joining me in sharing a picture of yourselves before your fifth birthday to help with those conversations and to share some smiles and memories too."

© Provided by E! News Max Mumby/Indigo/Getty Images/Instagram

The Royal Foundation Centre for Early Childhood, which Kate founded in 2021, recently launched its Shaping Us campaign, which highlights the importance of the first five years of a child's life and how they shape the rest of their life.

See photos of Prince Louis since he was a baby:

© Provided by E! News Louis appears with his mom at the Platinum Jubilee Pageant, the final event celebrating Queen Elizabeth II 's Platinum Jubilee. © Chris Jackson - WPA Pool/Getty Images Kate whispers something to Louis at the Platinum Jubilee Pageant, the final event celebrating Queen Elizabeth II 's Platinum Jubilee, on June 5, 2022. © Duchess of Cambridge/WPA Pool/Shutterstock In a pic for his 3rd (!!) birthday, Louis looks exactly like big brother Prince George . © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Duchess of Cambridge/PA Wire In honor of the royal tot's first birthday in April 2019, the royal family shares a new set of adorable portraits. © Duchess of Cambridge/PA Wire Taken in the garden of the royal family's Norfolk home, Kate Middleton captures her son donning a blue sweater decorated with a dog. © Duchess of Cambridge/PA Wire There's no denying Louis shares a striking resemblance to his 5-year-old brother, Prince George. © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Dominic Lipinski/Pool Photo via AP The Duchess of Cambridge looks lovingly at her son ahead of his official christening ceremony, which took place in July 2018. © Dominic Lipinski/Pool Photo via AP Little Louis wears the famous handmade replica of the Royal Christening Robe, which was also worn by his older siblings. Prince Harry , Prince William , their father Prince Charles and even Queen Elizabeth II herself wore the original outfit at their own christenings. © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Provided by E! The world gets its first good look at the little one, who is fifth in line to the throne. © Tim Rooke/REX/Shutterstock Prince Louis is snug as a bug while leaving the Lindo wing, hours after his mum gave birth. © BEN STANSALL/AFP/Getty Images On April 23, 2018, the Duke and Duchess of Cambridge introduce their third-born child on the steps of St. Mary's Lindo wing. For the latest breaking news updates, click here to download the E! News App