Duchess of Cambridge SHOCKS bystanders outside Kensington Palace home

As the future King and Queen of England, the Duke and Duchess of Cambridge's lives are usually shrouded in secrecy.

Mandatory Credit: Photo by Anthony Harvey/REX/Shutterstock (10159936ai) Catherine Duchess of Cambridge Catherine Duchess of Cambridge visit to the Foundling Museum, London, UK – 19 Mar 2019 The Duchess of Cambridge will visit the Foundling Museum to understand how they use art to make a positive contribution to society by engaging with vulnerable and marginalised young people. The Foundling Museum tells the history of the Foundling Hospital, the UK's first children's charity and public art gallery. The museum works with contemporary artists, writers and musicians to develop learning programmes that are meaningful for young people, especially those who are looked after and care-experienced, to help them see the world differently and imagine new possibilities for themselves.

Rarely do members of the public get a glimpse into their private time, and the couple only very occasionally speak about their how they live their lives behind closed doors.

So it was understandably a shock when royal fans wandering around the grounds of Kensington Palace came across none other than Catherine herself taking a stroll – imagine!

It seems as though the Duchess was out on a sweet trip out with two of her children, when a couple of Twitter users revealed they were shocked after casually strolling past her in Kensington Gardens!

One claimed that Catherine was out with Prince George and Princess Charlotte, who she was reportedly pushing in a pushchair.

The fan wrote, In London for 8 hours, walking through Kensington Gardens and who walks past me?! Only Kate Middleton pushing Charlotte in her pushchair with George on his little push-bike .