Prince William and Kate Middleton are having a spring baby! 
 
 “Their Royal Highnesses The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April,” Kensington Palace said in a statement Tuesday. 
 
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 The royal couple will also kick off the exciting year with an official royal tour of Norway and Sweden in early 2018, the palace announced. 
 
 Will and Kate revealed in September that they are expecting baby number three, who will join big brother Prince George, 4, and big sister Princess Charlotte, 2. 
 
 After battling severe pregnancy sickness for the past month, Kate stepped out for the first time last week with a hint of a baby bump. 
 
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 The event marked Kate‘s first public outing since August 30, when she and the royal brothers marked the 20th anniversary of the death of Princess Diana. Only a few days after that, it was announced that she is pregnant — and with that came news she was suffering from Hyperemesis Gravidarum, an extreme form of morning sickness that forced her to cancel her public duties. 
 
 The illness also meant that she missed taking her 4-year-old son Prince George to his first day of school last month. (William pulled solo dad duty instead, later saying that most parents were “in floods of tears. The kids were all fine.”) 
 
 MEGA 
 
 Kate was in good spirits again on Monday when she made a surprise appearance alongside William to meet the famous Paddington Bear at the cuddly character’s namesake train station in London. She even did a little dance with the famed storybook character on the platform. 

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 The Duchess of Cambridge, Kate Middleton, has made her first public appearance since announcing that she is expecting her third child. On Tuesday, World Mental Health Day, the Duchess stepped out with Prince William and Prince Harry with their Heads Together campaign for a reception at Buckingham Palace, where they met mental health workers from across the UK. 
 
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 An aide: "The Duchess' condition is improving but she is still suffering from hyperemesis gravidarum." pic.twitter.com/EblFsy9zju — Victoria Murphy (@QueenVicMirror) October 10, 2017 
 
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 Kate, who covered her growing baby bump in a light blue Temperely London dress, has not been seen in public since Aug. 30, when she joined the Princes at Kensington Palace to dedicate a new garden to honor Princess Diana on the 20th anniversary of her death. 
 
 
 
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 According to The Daily Mail, a royal aide confirmed on Tuesday that the Duchess is still suffering from hyperemesis gravidarum, an acute form of morning sickness she also had while pregnant with George and Charlotte, but things have been “improving.” The aide added, “She is delighted to be here tonight.” The condition likely caused Kate to miss 4-year-old George’s first day of school at Thomas’s Batersea on Sept. 8. At the time, a source told Us Weekly that Kate “watched the news from home” and “was desperately sad that she couldn’t make it.” 
 
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 Shortly after Kensington Palace confirmed Kate's pregnancy, People reported that the Duchess was “less than three months” along, which means George and Charlotte will have a new sibling to fawn over in late spring. 
 
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– The third royal baby born to Prince William and wife Kate is expected to be a spring baby, People reports. "Their Royal Highnesses the Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April," Kensington Palace announced in a statement Tuesday. The royal couple first announced Kate's pregnancy in early September due to the fact that Kate's struggle with hyperemesis gravidarum, a severe form of morning sickness, was keeping her from attending official events. The due date announcement, however, comes on the heels of Kate having been seen out with a baby bump and later with a new haircut over the past week.