Kate is now pregnant with her third child and suffering from acute morning sickness, which is why she won't be accompanying Will on the first trip, the Local Norway reports.
Kate, 35, made her second public appearance in a week, proving that she is overcoming symptoms of her severe acute morning sickness - otherwise known as hyperemesis gravidarum.
Kate Middleton looked as stylish as always at the event, keeping her bump under wraps in a smart, double-breasted blue jacket and a pair of black slim-fitting pants.
Kate covered up against the autumnal chill in a smart blue £760 blazer by Philosophy Di Lorenzo Serafini.
Designed by The Royal Foundation of The Duke and Duchess of Cambridge and Prince Harry, the program aims to improve the availability and quality of sports coaching and boost the confidence of 16-24 year olds with limited opportunities. While it was announced in September that the Duke and Duchess were expecting their third child, it was only confirmed yesterday that the baby is due in April 2018.
North Korean Diplomat: Nuclear War May Break out at any Moment
The statement comes on the heels of heightened rhetoric between North Korea and the United States over the past several months. Mr Kim warned that tensions on the peninsula have "reached the touch-and-go point and a nuclear war may break out any moment".
Parents William and Kate were given two West Ham shirts for Prince George and Princess Charlotte at the football club's home in London.
But the footballer joked he wasn't sure if the royal offspring would ever been seen wearing the kits - as William is an Aston Villa supporter. For 99% of the population they are figures from afar.
For her latest outing, she opted for a more casual look.
Prince Harry gave a speech, telling the audience "We believe that our graduates here today really are the future of coaching".