It's possible that Markle is indeed suffering from jet lag, as she and Harry arrived in Australia earlier this week for the start of a 16-day tour of the continent, as well as New Zealand, Fiji and Tonga.
On the second day of her royal tour of the Commonwealth in Dubbo, Australia, Meghan wore a grey blazer from the tennis legend's collection.
While the group dressed in loud and outrageous fluorescent outfits, Harry and Meghan were more subdued, but their message to the group was clear.
Meanwhile, a source told HollywoodLife that her husband Prince Harry is anxious about the effect all of her engagements on this tour will have on her and the baby.More news: 3 takeaways from Red Sox's win
The newly-married royals were on Cockatoo Island to cheer on competitors in the Invictus Jaguar Land Rover Driving Challenge.
"As soon as I introduced my daughter to Harry, he said, 'That's a great name, '" Bonaddido said, according to Marie Claire UK.
Meghan Markle has opened up about her recently announced pregnancy, saying it feels like "jet lag".
The pregnant duchess said she felt "emotional" hearing the views of the pupils on equality as students showed off their projects, including making up boxes of supplies for women in need.
Retired Australian cycling champion Anna Meares said she was "cheeky" by showing the Prince a newspaper cut out featuring a picture of him with his head in his hands.
What do you think of the name Harriet if Harry and Meghan have a baby girl?
"Even in her jetlagged state she got up in the morning and did yoga at 4.30am", she said.