Princess Charlotte's King's Cup Regatta dress is on sale: Here's where to buy it

Royal fans couldn’t wait to find out what the Duchess of Cambridge was wearing yesterday as she went head-to-head with her husband Prince William at the King’s Cup Regatta.

But there’s a new royal whose fashion choices have caught our eye.

Princess Charlotte stole the show wearing the cutest little dress we’ve ever seen.

The fourth in line to the throne was seen sitting on a yacht wearing an adorable blue and white striped dress - on brand with the day’s nautical theme.

The young royal was spotted wearing the Blue Seersucker Stripe Dress by Ralph Lauren, one of the family’s favourite go-to brands.

And luckily for royal fashion lovers, the dress is still available to buy online.

Princess Charlotte with her mother the Duchess of Cambridge at the King's Cup Regatta [Photo via Getty Images]

It’s currently on sale for £69.30 and comes in a plethora of sizes and two colours, pink and blue.

The sweet design features an all-over stripe print and a Peter Pan collar, pleated skirt and button fastenings on the back, making it a great option for the summer.

READ MORE: Shop Kate Middleton’s favourite £46 boat shoes

It can be styled with a pair of Mary Jane shoes for a stylish day time look.

If you want to get your hands on the sweet dress you ought to hurry. We reckon the “Charlotte Effect” will make it fly off the shelves soon.

Shop The Look

Ralph Lauren Blue Seersucker Stripe Dress | £69.30 (WAS £99) | Shop it now

Princess Charlotte was joined by her grandparents Michael, 70, and Carol, 64, on the yacht where they enthusiastically cheered on the Duke and Duchess in the Isle of Wight.

But later on, royal watchers couldn’t help but notice the four-year-old make a goofy face to the crowd.

The hilarious moment happened when Kate and Charlotte said hello after the race had finished.

The young royal is cheeky as well as stylish [Photo via Getty Images]

While Kate waved at onlookers in Cowes, Charlotte showed her cheeky side by poking her tongue out as she peered out of the window.

The naughty gesture sent Kate into a minor meltdown and was seen trying to get her daughter to stop whilst waving at the crowd.

Shop Charlotte’s Wardrobe

The Unicorn Purse from Amazon | £7.64 | Shop here

[Photo:Getty/Amazon]

The Sandals from John Lewis | £11 | Shop here

[Photo: Getty/John Lewis]

The Hairband by Pepa & Co | £10 | Shop here

[Photo: Getty/ Pepa & Co]

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