Meghan Markle, Kate Middleton twin in blue

At an event with Prince William and Prince Harry discussing charitable work done by the Royal Foundation Forum, Meghan Markle and Kate Middleton made quite the stylish pair in blue.

The Duchess of Cambridge wore a classic blue dress from one of her go-to maternity brands, Seraphine, featuring a two-button detail on the front.

The style is appropriately named the "royal blue tailored maternity dress." She completed her look with a pair of navy suede heels.

On the other hand, the 'Suits' actress, who partook in her first official royal event with her fiance Prince Harry and future in-laws, wore a navy blue trench dress made by American designer Jason Wu. She wore a multi-strap suede pumps from the popular Italian brand Aquazzara Casablanca.

The Kensington Palace shared the moment on their official page on Twitter, writing, "TRH & Ms. Markle spoke to @TinaDaheley about the inspiration behind The Royal Foundation, the issues that are close to their hearts, and their ambitions for the future."

The Royal Foundation was set up by Prince William and Prince Harry as the main vehicle to pursue their charitable interests. The Duchess of Cambridge became a Patron in 2011, and Markle will soon become the fourth Patron.

Meghan is due to marry Prince Harry on May 19 this year. She is a supporter of women empowerment, advocating for women rights and a self-proclaimed feminist.