Sarah Ferguson took to social media to wish her youngest daughter Princess Eugenie a happy 30th birthday - and shared a very special new photo.
She took the behind-the-scenes snap at Eugenie's Royal Wedding in October 2018, describing it as her "favourite photo".
The beautiful photo shows the bride smiling naturally at the camera wearing her stunning emerald tiara.
Fergie captioned it: "My favourite photograph just for her mum on her wedding day... and my little girl is 30 today and Happy Birthday my little magic dust."
The photo appears to have been taken outside, but you can see into a part of the wedding area through an open door behind her.
The Queen's granddaughter, who is tenth in line to the throne, married her long-term boyfriend Jack Brooksbank at St George's Chapel in Windsor.
She's since released a number of gorgeous photos from their special day.
Princess Eugenie also shared the photo along with several others from different years of her life to mark her birthday on Monday.
The first shows her as a baby with her proud parents Prince Andrew and Sarah Ferguson.
The second shows her as a toddler sitting in a pram while eating an ice cream cone.
There's also an adorable photo of her in her school uniform.
A number of Eugenie's friends also took to social media to wish her a happy birthday.
Pop star Ellie Goulding shared a stunning photo of them looking out to a sunset with the message: "Happy birthday to you.
"You are kind, ridiculously hardworking, so funny and so brilliant. You truly are one in a mill."
Jack Whitehall's sister Molly also shared a lovely photo, taken at her wedding earlier this year.
She wrote: "Pooch, great friend and the most amazing woman with the kindest heart."
In the last few days Sarah Ferguson has used her Instagram account to thank the NHS for their work in fighting coronavirus Covid-19.
She has shared a number of pictures containing messages to those putting themselves at risk to help others at this difficult time.
She captioned one: "The NHS, doctors, nurses and all the medical teams are doing unbelievable work and we need to support them as best we can."
