14/08/2014 12:45 BST | Updated 20/05/2015 06:12 BST

Kate Middleton Looks Exactly Like Her Grandmother

The Duchess of Cambridge revealed her grandmother was a top secret spy during the Second World War this week, and after seeing this photo that Clarence House tweeted, we can't believe how alike they look. It's definitely all in the hair and the smile.

Kate shared details on her grandmother, Valerie Middleton, during her visit to Bletchley Park on Wednesday.

After marrying Kate's paternal grandfather, Peter Middleton, she worked as a duty officer at Britain's Government Code and Cypher School at Bletchley Park, where staff deciphered German army and air force messages.

Take a look at this black and white photo of Valerie from way back when. Can you see the similarity?