The princess' new diamonds weren't the only beautiful thing she wore in her engagement snaps, though, with Bea wearing a green floral-print dress by Australian designer Zimmermann to share her exciting news.
The gorgeous long-sleeved maxi (which retails for around $1020 AUD) was the perfect piece to pair with her shiny new accessory for the romantic UK autumn announcement.
Bea's mum, Sarah Ferguson, also shared the engagement news on social media, taking to both Twitter and Instagram to express her joy.
“@princesseugenie took the colour photographs as my girls are so close," she captioned her Insta post.
"Beatrice and Edo wanted her to capture this special moment.
"The black and white photographs were taken by Misan Harriman at Royal Lodge, Windsor Great Park.
Misan's thoughts on the special news were also shared in Fergie's post.
"Everything clicks when they are together and that’s exactly what my lens captured. It was an honour to observe and document such love."
“We are thrilled that Beatrice and Edoardo have got engaged, having watched their relationship develop with pride," Sarah and Adrew, the Duke and Duchess of York, shared in a statement.
"We are the lucky parents of a wonderful daughter who has found her love and companion in a completely devoted friend and loyal young man. We send them every good wish for a wonderful family future.”
And Edo's parents, Nikki Williams-Ellis and Alessandro Mapelli Mozzi, are equally thrilled at the news!
“We are truly delighted about Edoardo’s and Beatrice’s engagement. The family have known Beatrice for most of her life. Edo and Beatrice are made for each other, and their happiness and love for each other is there for all to see. They share an incredibly strong and united bond, their marriage will only strengthen what is already a wonderful relationship.”