Prince Harry just let slip his nickname for Meghan Markle in public, and awww

Probably could have predicted this one, but it's still cute

Before news broke that Prince William and Kate Middleton had welcomed their third child, a son, this morning, Prince Harry and Meghan Markle were out and about carrying out various public engagements over the weekend.

While we're still waiting on a name, Prince Harry has now been bumped down to sixth in line to the throne following the arrival of his nephew.

The couple attended an Invictus Games Reception on Saturday, hosted by Australian Prime Minister, Malcolm Turnbull, ahead of the games in Sydney later this year.

During the day, Meghan wore a suitably summery floral green dress by Self Portrait (which has, of course, sold out) and a black Alexander McQueen blazer.

The two then headed out for the evening to enjoy the Queen's 92nd birthday celebrations at the Royal Albert Hall.

But thanks to some footage from the reception, we've now been made privy to the adorable nickname Prince Harry has for his future wife.

In a clip of footage from the Daily Mail, Harry can be heard calling, 'Meg! Meg!' to try and get his fiancé's attention so that he can make an introduction.

While 'Meg' may not be the most surprising nickname of all, it's still adorable to hear.

Watch below (and try not to melt).

Be still our beating hearts.

Reckon the Queen calls her Meg, too? No?