Princess Eugenie has shared her support for Prince Harry in a moving post on social media which pays tribute to her uncle, King Charles.
The 32-year-old, who is expecting her second child with husband Jack Brooksbank, took to Instagram to express her feelings about the special day.
Eugenie posted a selection of photos from the event, and to the delight of fans included Prince Harry in the mix.
Writing to her 1.7 million social media followers, she said: "Yesterday meant so much to me, as I'm sure it did to so many watching.
"What a magical celebration for The King, The Queen, our country, and the Commonwealth.
"The day was such a reflection of dedication and service to our country."
Royal experts predicted that Prince Harry might have a lonely time at his father's Coronation, with members of the Royal Family choosing not to speak to him.
However, he was spotted chatting with Eugenie's husband Jack ahead of the beginning of the ceremony.
Harry's friendship with Jack could be a result of the bond he shares with Eugenie, which is thought to be very close.
The Princess's image choice which she shared online yesterday, did not go unnoticed by fans.
One person wrote in the comments: "Thank you for showing Prince Harry in your photos. He's been iced out for the most part, so it's nice to see your support."
Another said: "Thank you for your support to Prince Harry and his family."
While a third royal fan added: "Your hubby is amazing, the world watched and saw his treatment of Harry. He's a true friend."
Harry and Eugenie often spent time together as children, despite there being five years between them, thanks to the friendship between their mothers Princess Diana and Sarah Ferguson.
Princess Eugenie became the first member of the Royal Family to make a public visit to see Prince Harry in California, two years after he quit as a senior royal.