Duchess of Cambridge Kate Middleton

The Duchess of Cambridge Kate Middleton is pregnant with a baby girl, if a recent slip of the tongue is any indication.

Middleton let it slip when she was given a white teddy bear by a local, Diane Burton, and the 31-year old royal and soon-to-be Mom she appeared to say she would give it to her daughter.

"Thank you, I'll take that for my d--" Prince William's wife replied, cutting herself off mid-sentence.

Oops!?!

Did Kate make a mistake?

When a well-wisher asked the royal if she was about to say "daughter," Kate smiled and replied coyly, "We're not telling."

Other guests also pushed the Duchess of Cambridge, noting that she did indeed let it slip that she was expecting a little baby girl, but she refused to answer.

Middleton, pregnant with the couple’s first child and expected to give birth in July, has only recently begun to show after a difficult start to her pregnancy.

(Image: WENN)