The news of Elvis Presley's grandson, Benjamin Keough's tragic passing shocked the world yesterday.
An outpouring of grief for the 27-year-old son of Benjamin Keough and Lisa Marie Presley has since followed the heartbreaking passing.
Among those sharing their support for the family is Duchess of York, Sarah Ferguson.
Taking to Instagram to share a photo of herself with Lisa Marie, Sarah spoke of the tragic loss as well as her close friendship with the star.
"You stayed with me in my darkest moment and I am here in Yours .. love you my sister Lisa Marie .. wherever, whatever I am with you, in all steadfastness," Sarah wrote.
"Dearest Lisa Marie, Finley, Harper and Riley. You have a family here and I love my sissy .. love you to your heart and will never stop loving my sissy."
Sarah and Lisa's friendship may seem surprising to some, but the duo have been close for years, in fact, both their daughters Princess Beatrice and Riley Keough have been spotted out together, too.
The two families have become intertwined with their friendships spanning two generations.
Lisa attended the Duchess' 50th birthday in 2009 as well as Beatrice's 21st birthday.
It is said Lisa Marie and Sarah first bonded when meeting on a visit to the U.S.
Sarah reportedly invited Lisa Marie to holiday in her Spanish villa near Marbella, determined to help her cope with the death and grief of her late husband, Michael Jackson.
"They have become very close," a source told New Zealand's Women's Weekly. "It may seem an odd combination but they get on very well and have lots in common. Sarah invited her to Bea's birthday. She came with her children and partner."