The Duke of Sussex declined the offer.
Prince Harry may have previously said he didn't mind whether his wife, Meghan Markle, gives birth to a baby girl or a boy, but it turns out the Duke of Sussex does have a preference.
Have you seen Prince Harry and Meghan while they've been in Australia?
Meghan then joined her husband at a reception for Invictus competitors, their families and friends hosted by Australian Prime Minister Scott Morrison. And mom-to-be Meghan Markle has been the ultimate trooper, attending multiple events each day with a huge smile on her face.
Editors at The Telegraph have reported that there are concerns over the terrain of the sandy island, where journeys involve a bumpy vehicle ride which often leaves tourists feeling unwell.
The appearance comes after the couple chose to slightly cut back Meghan's schedule for the next couple of days, according to multiple reports.
A royal source told reporters that Meghan was "not sick, just exhausted", adding, "We have to try to pace her".
"You hear people that met the Queen when she came here (in 1954)" said 26-year-old fan Christopher Cundle, "and they are still talking about it now".
"I thought, 'My baby is having a baby, '" he told the news outlet.
Harry and Meghan made their debut as a couple at the 2017 Invictus Games in Toronto.
However, Meghan's participation on Fraser Island is up in the air.
"We have to make sure she is well-paced and not overdoing it", the source added. Last week at Bondi she told a wellwisher she had been up at 4.30am doing yoga.
Prince Harry poses with Australian athletes taking part in the Invictus Games as Benjamin Yeomans holds up swimming trunks for the prince.
"I'm sorry but common women have to work through, she gets no special privileges. she's only pregnant not ill", one wrote on Twitter.