Kate Middleton says Prince Louis is still her 'baby boy'

Despite Prince Louis turning four in April, Kate Middleton has revealed she still thinks of him as 'my baby boy'.

• The Duchess revealed all to members of a family support charity in Brent recently
• Prince Louis is Kate's youngest son, after Princess Charlotte,7, and Prince George, 9
• In other royal news, Why the Queen hasn’t been able to start her Balmoral break fully yet

Mother-of-three Kate Middleton is obviously finding it hard to see her youngest child growing up so fast - as she recently revealed she still thinks of Louis as her 'baby'.

The now four-year-old, Prince Louis, who spent the majority of the Queen's Jubilee weekend pulling cheeky balcony faces and having sweet chats with the Queen, is fast growing up - but Kate is obviously missing baby Louis. 

Prince Louis' birthday was celebrated with new photos, taken by the Duchess of Cambridge in April - with the photos showing the young royal enjoying himself on the beach playing. 

But despite taking the photos Kate, who this week revealed one of her favorite photos of Prince Louis with sweet thank you note, can't believe he's not a baby anymore.

As the royal visited a baby bank called Little Village hub in Brent last month, to see how it was supporting local families, she admitted "I keep thinking Louis is my baby, but he's a proper boy now." Ah bless her. 

But despite this, Kate Middleton believes only her and Prince Louis share a special bond.  The Duchess says as Louis grows up, he looks like her more every day - and she loves this sweet fact.

The royal source said, "Everyone always comments on how Louis is the spitting image of Kate.

"She loves it and thinks it's very sweet - she often jokes that he's the only one of her kids who actually looks like her!"

Kate may be excited that her 'baby boy' resembles her, but her husband does too. Newly surfaced photos of Prince William where he looks just like Prince Louis in his childhood show an uncanny resemblance to the small royal. 

Photos of a young Prince William riding a bike at the Sandringham estate in 1990 have resurfaced - and fans are amazed at how much he looks like Louis.