Meghan Markle and Kate Middleton have stepped out for their first official royal engagement together.

The women joined Prince Harry and Prince William on stage at the Royal Foundation’s inaugural Forum in London. Prince William made reference to the fact that the newest member of the royal family was there.

"We’re particularly happy that it’s our first Royal Foundation Forum with Meghan," he told the audience.

Meghan and Kate made for a striking pair as they sat side-by-side during the discussion. The former Suits star wore a navy trench-style sleeveless dress by American designer Jason Wu, and navy heels while Kate, who is seven months pregnant, donned a royal blue empire line number. Meghan has broken royal protocol with her look by not wearing  tights, reports Cosmo. The theme of the event is 'Making A Difference Together' and is the first time the Royal Foundation’s charities, including Heads Together, United For Wildlife, We Are Invictus, We Are Coach Core and the Endeavour Fund, have come together like this. The foundation was set up in 2011 by the princes as an umbrella organisation for their various charities. Kate became a patron of the foundation when she married William in 2011 and Meghan will do the same once she and Harry are wed this May. Meghan is expected to answer questions from the crowd later in the event.