Fergie and Josh Duhamel welcomed their first child [1], Axl Duhamel, in August 2013, and he's been winning our hearts on Instagram ever since. The family often delivers adorable photos of the little guy, whether his face is on Fergie's birthday cake [2] or he's cheering on Team USA at the World Cup [3] on Josh's shoulders. Keep reading to see all of their heart-melting moments, and then check out even more sweet celebrity families on Instagram [4].