Prince William and Kate Middleton just passed a huge relationship milestone

Congratulations are definitely in order!

The Cambridges are one of the most talked-about families in the world, but while the Duke and Duchess of Cambridge spend the most time in front of the cameras, it’s their children that really steal the limelight.

From Prince George’s cheeky grin and Princess Charlotte’s sassy comebacks to Prince Louis’ royal wave, these toddlers never fail to make news and this summer has been no exception.

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Princess Charlotte arrives for her first day of school at Thomas’s Battersea, joining her older brother Prince George ✏️📚🏫

A post shared by Kensington Palace (@kensingtonroyal) on Sep 5, 2019 at 1:15am PDT

But it wasn’t Princess Charlotte’s first day at school last week that got everyone today. Instead, it was her parents, Prince William and Kate Middleton, as it was revealed that they had passed a huge milestone together.

But what is the milestone in question? The Duke and Duchess of Cambridge have reached 10 million followers on their Kensington Royal Instagram.

These two – such millennials!

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The Duke and Duchess of Cambridge are very pleased to share some new photographs of their family as they visited the RHS Back to Nature Garden at the #ChelseaFlowerShow on Sunday afternoon. The photographs were taken by @mattporteous. The #RHSChelsea Back to Nature Garden, designed by The Duchess and award-winning landscape architects Andrée Davies and Adam White of Davies White Landscape Architects, is a woodland setting for families and communities to come together and connect with nature. Her Royal Highness is a strong advocate for the proven benefits the outdoors has on physical and mental health, and the positive impact that nature and the environment can have on childhood development in particular. Over the past months, Prince George, Princess Charlotte and Prince Louis have helped The Duchess gather moss, leaves and twigs to help decorate @The_RHS Back to Nature Garden. Hazel sticks collected by the family were also used to make the garden’s den. The Duchess told Monty Don in an interview for the BBC: “I really feel that nature and being interactive outdoors has huge benefits on our physical and mental wellbeing, particularly for young children. I really hope that this woodland that we have created really inspires families, kids and communities to get outside, enjoy nature and the outdoors, and spend quality time together.”

A post shared by Kensington Palace (@kensingtonroyal) on May 19, 2019 at 2:31pm PDT

The royal couple, alongside the Duke and Duchess of Sussex, paves the way in social media for the royal family, known for their love of emojis and sweet throwback snaps.

It’s hardly surprising therefore that the account has grown as much as it has.

The Duke and Duchess of Sussex have 9.4 million followers on Instagram currently, but given that they only set up their account in April, we have no doubt that they will catch up.

Congratulations to the Duke and Duchess of Cambridge.