The minor royal, who is a senior director at a PR company and 52nd in line to the throne, will marry Thomas Kingston next year.
And the newest addition to the royal family is actually a familiar face, as he used to date the Duchess of Cambridge sister Pippa Middleton .
Thomas, known as Tom, is also good pals with Prince William. He dated Pippa, who is now pregnant with her first child, in 2011 remaining friends after their split, and have been photographed together in public several times.
Lady Gabriella's proud parents released an official photo to celebrate the engagement and a statement.
It reads: "Prince and Princess Michael of Kent are delighted to announce the engagement of their daughter Lady Gabriella Windsor to Mr Thomas Kingston.
"The engagement took place in August; Mr Kingston proposed on the Isle of Sark.
"The wedding will take place in spring of 2019."