It now may be time to start picking out clothes for Kate Middleton's bundle of joy-to-be!

Pregnant Kate Middleton appears to have dropped a big hint that she's having a baby girl, according to Us Weekly.

The 31-year-old royal, who is married to Prince William, accidentally may have let the gender slip out while addressing a well-wisher during a visit to the National Fishing Heritage Centre on March 5 in Grimsby, England. 

The well-wisher, named Diane Burton, had just given Kate a white teddy bear as a cute little gift.

"Thank you, I'll take that for my d...," said Kate, who cut herself off in the middle of the sentence after having made a "D" sound at the start of that word.

When an onlooker asked if she was about to say "daughter," Kate sneakily smiled and said, "We're not telling." Sounds like a "yes" to us!

Another source reveals that Kate and William do know what gender they're having, but "they've only told their parents." 

So this is not a definite sign that she's having a girl, but it certainly seems that way!

Source: Us Weekly