Kate Middleton's daughter Princess Charlotte is just about six months old, but the buzz is out there that the Duchess of Cambridge is expecting her third baby with Prince William.

The latest report claims that Kate Middleton's third pregnancy rumours are true and if these new reports are anything to be believed, then the royal couple is actually expecting twins. The Duke and the Duchess are all set to become parents again as they prep to expand their family with not just one, but two new royal babies, reported Hollywood Life.

"To say she was shocked would be an understatement. She's suffering more from exhaustion than anything else," a source said.

A couple of weeks ago, the same website had reported that Kate is in her early stages of pregnancy and is due to deliver sometime late April or early May. And now, it confirms the same by saying that the mother-of-two is already three months along.

The report further stated that Kate is feeling really exhausted because she is carrying twins. "She hasn't had much of an appetite or diet, so she's hardly gained any weight. Kate is very good at putting on a brace face, but everyone just wants to make sure she's taking care of herself," a source said.

Apparently, Kate was worried initially, but is now excited that they are going to be a full house with four babies. "Kate was a little discouraged. She wasn't sure if she would cope. She's still in the fog of having a newborn, and the thought of months and months of more sleepless nights with two babies caused her to panic," the source added.

In the last couple of months, there have been various reports and rumours that have suggested about Kate and Prince William contemplating to expand their family. The speculations went wild, especially after the Duke in one of his interviews hinted that they might consider trying for a third royal baby.

Also, Kate had reportedly said that she wants to have another baby before she turns 35. And in fact, many stories even claimed that the Duchess was being desperate to have a third baby only to seek Prince William's attention and to sort out issues in her marriage.

Now, only Kate Middleton or Prince William will be able to confirm this third pregnancy rumours and only time will tell if the royal couple is actually expecting twins.