Prince William and Kate expecting their third baby?

Are the Duke and Duchess of Cambridge expecting another royal arrival?
 
Rumours are building that Kate is pregnant again, five months after giving birth to Princess Charlotte.
 
"They’re expecting", a royals insider told Life & Style magazine. "It happened far quicker than they expected — they’d just started trying for another child. But William and Kate are so excited."
 
"Friends are saying the baby will arrive around June. They say Kate is at the very beginning of her pregnancy and won’t show any sign of a bump until next year. She still looks extremely slim," states their source.
 
“So far, she’s not feeling sick,” the insider added. "At the moment, she’s glowing. Kate does worry she will suffer from morning sickness again, but it wasn’t as bad with Charlotte as it was with George, so hopefully it will be less extreme this time.”
 
The rumoured third child would be fifth in line to the British Monarchy, behind Prince Charles, Prince William, Prince George and Princess Charlotte. Prince William's younger brother Harry is currently the fifth in line to the throne.
 
[Photo: AAP]