Harry made the quip after being asked if they ever had disagreements or struggled to work together as a family at the first Royal Foundation Forum in London to update the public on their charitable projects.
The Prince said: “I am personally incredibly proud and excited that my soon-to-be wife, who is equally passionate about seeing positive change in the world, will soon be joining us with this work.”
And Meghan, 36, set out her stall for female empowerment at the event, voicing her support for the #MeToo and #TimesUp campaigns at her ‘working debut’ with the young Royals.
The former Suits star said: “I hear a lot of people speaking about girls’ empowerment and women’s’ empowerment you will hear people saying they are helping women find their voices.
“I fundamentally disagree with that because women don’t need to find their voices, they need to be empowered to use it and people need to be urged to listen.
“Right now with so many campaigns like MeToo and TimesUp there’s no better time to continue to shine a light on women feeling empowered and people supporting them.”
All eyes were on Meghan and Kate as the two made their first joint public engagement together.
The pair appeared relaxed as they settled into a question and answer session.
Meghan will become a patron of the charity alongside Harry, William and Kate following the wedding in May but is already involved and is expected to answer questions on various projects at the London forum.
It is the first time the foursome – dubbed the Fab Four – have been pictured together since they attended a Christmas Day church service in Norfolk with the majority of the Royal Family.
Asked for her thoughts on the Royal Foundation, Meghan said: “To see the model of the foundation is really interesting because, while I’ve worked with larger NGOs, I’ve also worked with really small grassroots organisations where you can see a higher level of impact in my opinion, because there’s a lot less red tape.
“What you are seeing here and what I noticed with Heads Together from a global perspective, because I wasn’t here obviously when it was happening, was the power of convening all of these small organisations who have this same issue but need that extra push and support under this umbrella, you are able to achieve that.
“And the impact they all made with Heads Together was tremendous.
“So I’m very excited to be able to work on initiatives similarly and have that same sort of impact globally.”
The two couples arrived together for their first official event as a foursome and took their seats in front of a invited audience for the inaugural forum of their Royal Foundation.