The 30-year-old, whose wife Izzy Judd gave birth to their daughter Lola in January 2016, decided to document his daughter's vomit.
"Cheers Lola!" Judd wrote on the Instagram selfie.
Judd's relatable parenting post received a positive reaction from his fans.
"This is actually laugh out loud funny," one person wrote.
Another wrote: "Hahaha oh Harry get used to it, you'll have more of that to come!"
And then someone went even further: "Eventually, you will get a whole section of your wardrobe that resembles this."
Judd has shared small snippets of what life has been like with a new baby over the past two months on Instagram.
One snap showed him managing to multitask - holding his daughter while drumming.
Speaking about being a dad in his first interview since the birth, Judd said it is the most "natural" and best thing ever.
"You are just floating in a cloud of love," Judd told HELLO! Magazine in February 2016.
"It’s amazing. Our wedding day was the best day of my life and this was a similar feeling but times ten.
"Being a dad just feels right."