Fergie gushes over Princess Eugenie and fiancé in sweet letter

There’s no doubt Sarah Ferguson is ecstatic about her daughter Eugenie’s upcoming wedding.

A fan who sent the Duchess of York a letter congratulating her on her youngest daughter’s engagement to wine merchant Jack Brooksbank has shared the touching thank you card she received.

The royal aficionado posted Ferguson’s card, which features one of the official engagement portraits of the princess and her fiancé, on the Instagram account @royalseuropaletters.

And it’s literally giving us all the feels.

"As you may well guess we are all very excited and thrilled to welcome Jack into our family. Eugenie and Jack make a beautiful couple: full of love, kindness and fun," the mother of the bride wrote.

"They light up the room when they enter. We are so lucky that they found one another. Thank you for your kindness and loyalty over the years."

It’s not the first time Ferguson has expressed her fondness for her future son-in-law.

In August she appeared as a guest on British chat show The One, where she couldn’t stop gushing about Brooksbank.

"Jack is a really amazing bringer of light and he brings joy. I say to Jack always, ‘Just stay yourself’ and I'd say that to anybody. What else can you do in life?” the mother of two said.

With less than a month to go, the Royal Family has been setting final plans in motion for its second major wedding of the year.

Eugenie, 28, will marry her partner of seven years at St. George’s Chapel in Windsor - yes, the same castle where Meghan and Harry got hitched - on Friday, October, 12.

Unlike her newlywed cousin, Eugenie has reportedly chosen to stretch her wedding celebrations over two days.

The ninth in line to the throne has allegedly sought the services of coveted celebrity party planner Peregrine Armstrong-Jones to plan a star-filled recovery bash for the day after the wedding.

Some of the high-profile guests that are expected to be in attendance include Naomi Campbell, Kate Moss, Elton John, Ellie Goulding and Cara Delevingne.