Did Kate Middleton's one-letter slip reveal her baby is a girl?

One single letter may have given away the gender of the newest heir to the throne of England. On Tuesday, while visiting the National Fishing Heritage Centre in Grimsby, England, the Duchess of Cambridge, Kate Middleton, was given a white teddy bear by Diane Burton, a local. Then came the slip.

Kate, 31, began:

Thank you, I'll take that for my d--.

She cut off the sentence at that point, but knowing she could have said "son" or "daughter," or "baby," the "d" was rather telling. When a well-wisher asked the duchess if she had intended to say "daughter," Middleton smiled and replied,

We're not telling.

Sandra Cook, 67, another witness, overheard the exchange and told reporters:

I said to her: "You were going to say daughter, weren't you?" and she said, "No, we don't know." I said, "Oh, I think you do," to which she said, "We're not telling."

Royal tradition holds that the sex of a baby isn't announced. So, there hadn't been plans, at least as far as the public knows, of revealing the gender Kate and Prince William's baby.

As an example, Princess Diana knew that she was expecting boys with both William and Harry, but she kept the information private.

The revelation of a single letter has sent the world into a tizzy. Thus, Kate had best be cautious from this point on. If someone from the public offers her a rattle, she had better not accept it if it's pink. Accepting a blue one might throw everyone off track (assuming the baby is, in fact, a girl).

On the other hand, some might assume it means she has fraternal twins.