Louis Tomlinson didn't waste any time introducing his newborn son to fans!
On Wednesday, the 24-year-old shared the first photo of baby boy Freddie Reign, who was born on Jan. 21.
A second pic of the infant quickly followed on mom Briana Jungwirth's Instagram account.
The One Direction band member later took to Twitter to thank followers for their "nice messages."
The singer, who briefly dated Briana, a Los Angeles-based stylist, last year, happily announced the news of his first child's arrival last week, writing:
I'm pleased to say my baby son was born yesterday :) 👶 He is healthy and pretty amazing :) I'm very happy!!— Louis Tomlinson (@Louis_Tomlinson) January 23, 2016
Congrats to the new parents! Scroll down to see more celebrity tots who made their debuts on social media!