Britain's Prince Harry and Meghan, Duchess of Sussex greet children during a visit to Albert Park Primary School in Melbourne. Picture: AP

Duchess Meghan and Prince Harry have a "long list" of names in mind for their unborn baby.

The royal couple announced on Monday they are expecting their first child together, and during their trip to Melbourne, Australia, on Thursday, they confirmed they've already been given lots of food for thought when it comes to choosing a suitable moniker for their little boy or girl, who will be seventh in line to the throne.

School student Charlie Wolf, 12, asked the former actress, 37, and 34-year-old royal if they have decided on a name yet, to which Meghan replied: "We've been given a long list of names from everyone, we're going to sit down and have a look at them."

Another pupil added: "She said that she hadn't thought of one as it was still quite early."

The couple also spoke with the mother of five-month-old baby girl Harriet Bonaddido, Jessica, who said the flame-haired prince was impressed by the tot's name as it bares a resemblance to his own.

She also said that Meghan was smitten with her little one and tickled her toes "playfully".

According to PEOPLE,  Jessica, 28, said: "As soon as I introduced my daughter to Harry he said, 'that's a great name'. Maybe they will choose it for their own child which would be fun.

"Meghan was right behind him and was playfully tickling her toes and said how sweet it was that I'd brought her out today."