Not long to go.

The Duke and Duchess of Cambridge are attending a number of public engagements today and it's been rumoured that this will be Kate's last appearance before the third royal baby arrives. The couple were pictured arriving at London's Copper Box Arena to meet young sportspeople hoping to partake in some of the world's leading sporting events including the Olympics, Paralympics and Commonwealth Games. Richard Palmer, the royal correspondent for The Express, tweeted that today marks Kate's last day of public engagements before she takes a break to give birth to her third child.

The Duke and Duchess of Cambridge arrive at the Copper Box Arena in east London on Kate’s last day of public engagements before maternity leave. pic.twitter.com/GUYlrdigTM

— Richard Palmer (@RoyalReporter) March 22, 2018

Kate and William were pictured chatting to athletes and schoolchildren and the Duke even took part in a game of wheelchair basketball.

The Duke has a go at wheelchair basketball - and scores! ? pic.twitter.com/AkLhdumhYB

— Kensington Palace (@KensingtonRoyal) March 22, 2018

Chatting to schoolchildren pic.twitter.com/7z1eGp3cWv

— Richard Palmer (@RoyalReporter) March 22, 2018

As always, Kate's maternity wear is the centre of attention. Her floral top is from Hobbs, paired with black trousers and a cream coat from Goat, one of her go-to brands. Kensington Palace previously announced that their third child was due in April but no exact date has been shared.

The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April 2018. pic.twitter.com/jOzB1TJMof

— Kensington Palace (@KensingtonRoyal) October 17, 2017

The new arrival will be a sibling to Prince George (4) and Princess Charlotte (2) and speculation is already growing about the future royal's name.