The Princess of Wales shared a major throwback on social media last weekend, posting a photo of herself as a baby as part of her Shaping Us campaign.

"Faces are a baby’s best toy," Kate wrote in the caption alongside a photo which showed her as a baby. But, as well as commenting on how sweet she was as a little one, fans couldn't believe the resemblance between Kate and her son, Prince Louis.

"I thought it was Prince Louis," one fan said in the comments section, as another wrote: "Is it just me or is there a very big resemblance between Catherine and Louis?"

"Louis or Catherine?! Mummy’s twin!" another royal follower said, as a fourth chimed in with: "Louis is the absolute double of you! Marvellous picture."

Elsewhere in the caption, Kate explained the importance of the Shaping Us campaign that she's heading up.

"On Tuesday we launched #ShapingUs to raise awareness of the vital role our early years play in shaping the rest of our lives," the royal wrote.

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"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."

She ended the post by saying: "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."

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Jade Biggs
Freelance Writer
Jade Biggs (she/her) is one of Cosmopolitan UK's freelance writers, working across all sections including entertainment, beauty, body, and sex and relationships. She previously held the position of Features Writer, covering everything from breaking news and the latest royal gossip, to the health and fitness trends taking over your TikTok feed. Jade has a degree in journalism and has been a journalist and content editor for ten years, interviewing leading researchers, high-profile influencers, and industry experts in that time. She is a cat mom to four fur babies and is obsessed with Drag Race, bottomless brunches, and wearing clothes only suitable for Bratz dolls. Follow her on Instagram, Twitter, and LinkedIn.