The fifth in line to the throne and the US actress have been dating since the summer of 2016.
Reportedly, Ms Markle's engagement ring was designed by Prince Harry and features two diamonds which belonged to his late mother, Diana, Princess of Wales. The band is made of gold. At the center of, the ring is a diamond from Botswana, a country the couple has spent time together over the last year and a half.
The couple appeared for a photocall in the Sunken Garden at Kensington Palace in London on Monday afternoon.
A video of the couple was uploaded by @KensingtonRoyal
Prince Harry and Ms. Meghan Markle are "thrilled and happy" to be engaged. pic.twitter.com/HBz30SbZVE
— Kensington Palace (@KensingtonRoyal) November 27, 2017
A tweet says,
The Prince of Wales is delighted to announce the engagement of Prince Harry to Ms. Meghan Markle. pic.twitter.com/zdaHR4mcY6
— Clarence House (@ClarenceHouse) November 27, 2017