Kate Middleton and her royal baby bump may have been quiet in the headlines, but according to a new report the royal birth will be announced on Twitter.

According to Now magazine, the Duchess of Cambridge will be the first royal mother to announce a baby's arrival on the social media site.

Middleton is reported to be in the third trimester and royal fans all over the world have kept up with her pregnancy. 

Last week, fans were delighted when they noticed her shopping in London. 

Witnesses said Middleton ate a banana muffin and drank cappuccino, while she sat in the atrium at Chelsea Harbour's Dome cafe. 

"She just sat in the atrium like everyone else" a source said. "She was very polite and really nice - just totally normal. I didn't know it was her at first. I just thought, 'You look a lot like Kate Middleton' Then it kind of dawned on me."

The 31-year-old is expected to give birth around July, although she and Prince William have kept the secret of the baby's gender to themselves. 

Enstars reported that Prince William's brother, Prince Harry revealed the couple was having a baby boy. 

"Harry has been telling everyone Wills and Kate are having a boy and how thrilled he is at the prospect of having a little nephew," a source said. "They're really working hard on baby names and think they have it sorted but they won't reveal anything to anyone -- not even Harry."

Back in March, rumors swirled that Middleton was expecting a baby girl after she was caught saying,  "Thank you, I will take that for my d... for my baby," after she accepted a teddy bear from a fan at an event.

This is the first child for the couple. A spokesperson for the couple confirmed that Middleton has decided to take off following the baby's arrival. It is also reported that Prince William will take some time from his job off as a pilot o support Middleton and the baby. 

"William is expected to take two weeks off. This is extra time in addition to his holiday entitlement. If he wants to add holiday to extend his paternity leave he must get permission from senior officers," a source said.

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