By Kelsey Glein
Updated Nov 13, 2014 @ 11:30 am
Credit: David Parker - WPA Pool/Getty Images

Kate Middleton is glowing in navy! The Duchess of Cambridge attended a SportsAid workshop at the GSK Human Performance Laboratory in London yesterday, where we got a glimpse of her burgeoning pregnant tummy. Dressed in a sharp fit and flare Goat frock that features a collar, button-front, and belted waist, Middleton completed her look with black suede Stuart Weitzman knee-high boots (worn over tights) and a matching clutch.

Her outfit was a smart choice for the event, where Kate met with young Olympic hopefuls looking to compete in the 2020 Olympic and Paralympic Games in Tokyo, and she even took the time to take a few mental agility tests. Middleton's flattering ensemble made one thing clear: we're officially on royal baby (number 2) bump watch!