But regardless of the child's gender, have the mother-to-be and Prince William settled on a moniker yet?
"Nobody knows what William and Kate are calling their baby or even if they have decided on a name," a royal source tells E! News. "They are being very careful to keep everything to themselves. The duke and duchess are taking their privacy very seriously. They are not speaking to anyone about these private matters."
And while Middleton is obviously getting closer and closer to her July due date, our source assures us that "Kate is feeling great."
In fact, the royal insider notes, "She's continuing to feel much better as time goes on. Naturally, she's very excited about being a mum."
Earlier this week, the Duke and Duchess of Cambridge got the go-ahead to make some modifications to the couple's potential country retreat, which will hopefully give them added privacy once their bundle of joy arrives.