Meghan Markle and Prince Harry are keeping with one traditional royal baby rule. The Duke and Duchess of Sussex are pictured attending the premiere of Cirque du Soleil’s Totem in London on Jan. 16, 2019.  Paul Grover/AFP/Getty Images

They’re known for breaking royal rules and traditions often, but when it comes to their child, Prince Harry and Meghan Markle are reportedly sticking to at least one bit of protocol.

In the latest episode of their “Royals” podcast, New Idea journalists Rebecca Hyde and Angela Mollard discussed the Duke and Duchess of Sussex’s pregnancy, revealing that the couple likely doesn’t know the gender of their baby, since tradition usually has royal couples not learning or broadcasting the sex of their first baby.

“Generally they don’t find out the gender of the baby—that's very typical in the royals, that’s not something they generally do,” Mollard said (via Express UK). “Particularly with first babies, they don’t find out. So, when they say they don’t know the gender, that’s highly likely that they don’t. That’s not something that they find out.”

In addition, the commentators discussed whether or not they think Markle will give birth earlier than she has previously claimed, admitting that they felt she could be pregnant with twins and was giving birth before April.

“I have a theory with the royals that they tell you later dates than they think. I think she’s further along than she’s saying she is, I really do,” Mollard said. “Possibly she is having a multiple pregnancy.”

However, she maintained that the possibility the couple is expecting only one baby is still very much on the table, because the royal family would likely have released information regarding the birth of twins by now to avoid any slipups.

“I would have thought they would have announced that before now,” she added. “It would be very hard to maintain a conversation saying ‘our baby’ if you knew you were having two.”