It was the first public engagement on the second and final day of their visit to Northern Ireland.
Can you see Kate and William having another baby?
"Baby number four?" Barr asked Kate.
Kate replied with a laugh, saying: 'I think William would be a little anxious'.
Pakistan says it shot down 2 Indian warplanes
But Pakistan says the bombs did not cause any casualties and threatened a response to what they perceived as Indian aggression. Pakistan has therefore, taken strikes at non military target, avoiding human loss and collateral damage.
Kate wore a new, blue, $3200 coat by Mulberry for the walkabout with a repeat blue Jenny Packham dress, her navy Rupert Sanderson courts and matching clutch by Jimmy Choo.
Prince William appeared to take the challenge seriously, tilting the pint glass and watching the tap intently before exclaiming "Look at that bad boy!" as he admired his work.
There, William and Kate took part in a canoe race as well as other fun outdoor activities.
The royal couple then watched a group of young people perform a play about divisions and riots in Northern Ireland.
They then travelled to County Fermanagh to visit a youth centre, before returning to the capital for a party at the iconic Belfast Empire Hall.
Pakistan closes airspace, diverts all flights until further notice
By Wednesday evening, the ministry acknowledged the pilot was in Pakistan's custody and demanded "his immediate and safe return". The US, along with China, Britain, Germany and the European Union, have called for cooler heads to prevail.
They started their visit with a trip to to Windsor Park today, where they got some insight into community football projects and had a kick about.
The first day of the royal couple's tour focused on promoting the positive impact sport, nature and the outdoors can have on childhood development.
Captured IAF pilot must be treated humanely as per Geneva Convention
When a combatant is captured, there are established protocols on how the other side should be intimated about this. The law applies from the time of capture of a military personnel till his/her release or repatriation.