Smashing party: Carrie Underwood shares photos of son enjoying cake on his first birthday

"Happy birthday, Jacob! How are you already 1 year old?" Underwood wrote on Instagram. "You are smiley, crazy, smart, soooo fast and into everything! And, apparently, you love cake! I can't wait to see your personality continue to shine! I have a good feeling you're going to keep us all on our toes for years to come!

Underwood had the presence of mind to snap photos of the boy's cake, which had the likeness of a baby on top and Jacob's name written in green icing at the base, "Today" reported.

Jacob was born to Underwood and her husband, Mike Fisher, in January 2019. At the time, the singer referred to the boy as a "little miracle," according to "Today." The couple also have a son, Isaiah, who turns 5 next month, the website reported.