Still radio silent when it comes to her baby's sex, Kate Middleton is back doing her royal duties after suffering from an extreme case of morning sickness, hyperemesis gravidarum. With a tentative due date for her second pregnancy, which is at the end of April 2015, the royal figure is reportedly expecting a baby boy the second time around.

Palace spokesperson recently confirmed that the Duchess of Cambridge is not pregnant with twins and but a single royal baby. Since the royal couple announced that they are expecting their second bundle of joy, many speculations have been flooding the Net on the baby's gender and the possible names that the couple could use for their second child.

"Based on what Kate has been wearing since her return to the public eye, some believe that she is having another boy," Inquisitr reports. "There has been a lot of blue and black in her wardrobe lately, and some say that it could be an early mother's intuition poking through. Other style watchers will tell you that Kate has favored the color blue since Prince William presented her with his mother's sapphire ring."

Although the possibility of a royal twins has been eliminated, fans of the royal family are still excited about the impending arrival of another royal baby. If the new baby happens to be a boy, that could be a perfect symmetry of Prince William and Prince Harry's childhood as the next generation of royal princes.

Meanwhile, the expectant mother is so happy to be back doing her royal duties after being stuck at home for three months. She made headlines on her first public appearance since the palace announced her pregnancy wearing an Alexander McQueen coatdress with a matching hat to welcome Singapore's president Tony Tan, alongside Prince William on Tuesday, Oct. 22.

The Kate effect is definitely back in full force after the Duchess stepped out in the public sporting a black and nude Temperley London gown to the Action on Addiction event on Wednesday, Oct. 22. The elegant frock was instantly sold out on the brand's website in less than 24 hours after Prince George's mother debuted the dress.

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Britain's Catherine, Duchess of Cambridge, leaves the Blessed Sacrament Catholic School in London July 1, 2014. Catherine, known as Kate, was visiting the school to see the progress of school-based project M-Pact, which addresses problems of addiction in families. REUTERS
Britain039s Prince William and Catherine, the Duchess of Cambridge, cover up their ears from the engine blast
Britain's Prince William and Catherine, the Duchess of Cambridge, cover up their ears from the engine blast created by a Canadian Cormorant helicopter after landing in Summerside, Prince Edward Island, July 4, 2011. REUTERS/Paul Darrow (CANADA - Tags: ROYALS ENTERTAINMENT POLITICS) Reuters
Britain039s Catherine, Duchess Of Cambridge.
Britain's Catherine, Duchess of Cambridge stands on Centre Court after the men's singles quarter-final tennis match between Roger Federer of Switzerland and Stanislas Wawrinka of Switzerland at the Wimbledon Tennis Championships, in London July 2, 2014. Reuters
Britains Catherine, Duchess of Cambridge, smiles as she arrives for a visit to the Royal Marsden hospital in Sutton
Britain's Catherine, Duchess of Cambridge, smiles as she arrives for a visit to the Royal Marsden hospital in Sutton, southern England September 29, 2011. REUTERS/Paul Hackett Reuters
Britain039s Catherine, Duchess of Cambridge, poses during a photocall at a bid to launch a British team for the America039s Cup, at the National Maritime Museum in London June 10, 2014. Sailor Ben Ainslie announced plans on Tuesday for a British en
Britain's Catherine, Duchess of Cambridge, poses during a photocall at a bid to launch a British team for the America's Cup, at the National Maritime Museum in London June 10, 2014. Sailor Ben Ainslie announced plans on Tuesday for a British entry into the 35th America's Cup in 2017, aiming to return sport's oldest trophy to his country for the first time in over 150 years. REUTERS/Luke MacGregor
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