Sarah Ferguson is a proud grandmother.
"My children are phenomenal mothers," Ferguson gushed. "They were great children, but now they're phenomenal mothers. And now, I have these two exceptional grandchildren all in one year."
"Everyone asks me, 'How are your grandchildren?' Well, firstly, I look at my girls being wonderful mothers, and then I see these incredible beings," she continued.
"It's so funny because when August smiles at me now, because he's seven and a half months, you actually know he genuinely likes you," Ferguson told Hello!. "It's not a put-on smile, he genuinely finds me very funny, which is quite lucky."
Beatrice welcomed her daughter on Saturday, September 18. Earlier this month, the 33-year-old revealed that she named her daughter Sienna Elizabeth Mapelli Mozzi.
A friend of the royal couple explained the meaning behind the name Sienna. "They were looking for an Italian name which started with an 'S' for Sarah, to honor the Duchess, and also reflected the golden rust color of both the Duchess's hair color and Beatrice's which the new baby shares," the pal told Hello!.
Last month, Ferguson wrote an open-letter in Good Housekeeping about watching her daughters start their own families.
"Every day I thank the universe for allowing me to be your mother," she wrote at the time. "You have always been the blood in my veins. From the time you were wee tots, you made my life complete. I look at how full of humility, laughter and joy you are in your hearts, and I marvel at you both. Now, in you as mothers, I see strength, courage and steadfastness, integrity and goodness, and the way you embrace every challenge and moment."
"It is an extraordinary feeling when your child becomes a mother," she continued. "Suddenly my little girlies have their own little ones ... such a feeling to get used to. But if I do cry or tear up as you drive away, it is only because I am so proud of you. It has been just us for 33 years, but now you are creating your own families, and I couldn’t be happier for you both and my magnificent sons-in-law, Jack and Edo."
Ferguson said that she loves being a "young" grandmother. "I have so many fun ideas of things to do with my grandchildren, and of course they’re a perfect new audience for all my children’s books," she wrote.
Queen Elizabeth II currently has 12 great-grandchildren.