Kate Middleton
Britain's Catherine, Duchess of Cambridge, smiles during an Autumn Gala evening in support of Action on Addiction, in London October 23, 2014.Reuters

Speculation on the gender of Kate Middleton's second baby has gained steam again after the royal couple announced pregnancy news a few weeks ago. It was earlier rumoured that the duchess is expecting twins but latest report suggests that the Duchess is pregnant with a baby girl.

National Enquirer reported that the alleged 12-week-scan of Kate Middleton's baby has revealed the gender of the baby, according to Epoch Times. The tabloid went on to say that the "baby's gender was confirmed via a prenatal DNA test and both William and Kate are overjoyed."

The royal spokesperson is yet to confirm or deny rumours of Middleton's baby's gender.

It is also reported that Middleton's morning sickness condition has aggravated and that she "collapsed" recently but it is still not confirmed.

Prince William and Kate Middleton are scheduled to make an appearance at the Wales-Australia rugby match in Cardiff. Post the match, the couple will visit the Valero Pembroke Refinery. They will take part in the revelries of 50th anniversary of Oil refinery before unveiling paintings by local artists.

On 13 November, the royal couple will attend their first Royal Variety performance to be staged at London Palladium. They will be representing Queen Elizabeth II for the first time at the event.

The gala to be hosted by Michael McIntyre will see performances from a variety of British as well as American artists. Legendary singers Dame Shirley Bassey and Bette Midler, ex-couple Ed Sheeran and Ellie Goulding, and Demi Lovato are some of the singers who would entertain the Duke and Duchess of Cambridge at the soiree.

"The Duke and Duchess are delighted to attend the forthcoming Royal Variety Performance," said the royal spokesperson in an official statement, adding, "Members of the Royal Family will continue to support the gala evenings. As with any other invitation, attendance by the Queen and the Duke of Edinburgh will be assessed on a case-by-case basis," according to a report by Independent.