This Video of Carrie Underwood and Her "Angel" Isaiah Is the Sweetest Thing Ever

Carrie Underwood took to Instagram on Monday to share a precious video of her kissing her baby boy, Isaiah. Along with the clip, Carrie wrote, "Baby kisses are the best thing in the world...I'm so thankful for my sweet angel. He makes my life better in every way! #SoInLove #MomLife #Slobber." Of course, it's just one of the many cute mother-son moments the singer has shared on social media. Last month, Carrie sat down with Ellen DeGeneres and gushed over her son, whom she welcomed with her husband, Mike Fisher, back in February, saying he is the "sweetest and smiliest baby ever." Take a look at Carrie's post above, and then check out her spread in Cosmopolitan's December issue.