Meghan Markle and Prince Harry released a new photograph of daughter Lilibet following her first birthday on Saturday.
A party was held at Frogmore Cottage during the weekend of the Queen's Platinum Jubilee celebrations, which was attended by some extended family members and friends.
It is understood the "candid and spontaneous" image was taken by photographer Misan Harriman at the birthday picnic.
The Duke and Duchess of Sussex are reported to have been "incredibly touched" by the birthday wishes that have flooded in for Lilibet, who is named after the monarch.
The couple revealed their new snap after they returned to the US on Sunday night.
They were not in the royal box at Saturday's star-studded live concert in front of Buckingham Palace, which was attended by the Prince of Wales, the Duchess of Cornwall, and the Duke and Duchess of Cambridge.
Saturday was Lilibet's birthday and a spokesperson for the couple had said on the weekend they were spending the day privately.
The couple reportedly left the UK prior to the conclusion of the final events marking the Queen's 70 years on the throne.
This had been the first public appearance for the Sussexes following their decision to step down from royal duties two years ago.
They have never appeared alongside the Duke and Duchess of Cambridge since then.
The couples were on opposite sides of St Paul's Cathedral for a thanksgiving service held in honour of the Queen.
Kate and William sat in the front row with Prince Charles and Camilla, while Harry and Meghan were beside their cousins Princess Eugenie and Beatrice and husbands Edoardo Mapelli Mozzi and Jack Brooksbank.
Some watchers speculated that Kate Middleton's outfit for the thanksgiving service was a subtle nod to Harry and Meghan.
The Duchess of Cambridge looked stunning in a yellow Emilia Wickstead dress and matching Philip Treacy hat.
Treacy is said to be one of Meghan Markle's favourite designers and Kate also notably wore a very similar design at Harry and Meghan's wedding back in 2018.
Royal fans around the world have donated more than £79,800 to the World Central Kitchen, one of the charities the Sussexes' Archewell Foundation has been supporting, to celebrate Lilibet's birthday.
The organisation provides meals for those affected by humanitarian, climate and community crises and is said to be especially near to the couple's hearts.
José Andrés, a founder of the World Central Kitchen, previously told TIME: "Springing into action is not the easy choice for a young duke and duchess who have been blessed through birth and talent, and burned by fame.
"It would be much safer to enjoy their good fortune and stay silent. That’s not what Harry and Meghan do, or who they are.
"They turn compassion into boots on the ground through their Archewell Foundation. They give voice to the voiceless through media production.
"Hand in hand with nonprofit partners, they take risks to help communities in need—offering mental-health support to Black women and girls in the U.S., and feeding those affected by natural disasters in India and the Caribbean."