Louis Tomlinson of One Direction attended the 2015 American Music Awards. Credit: Jason Merritt/Getty Images

He's a doting dad! One Direction’s Louis Tomlinson took to Twitter Saturday, January 23, to announce the birth of his newborn son.

“I’m pleased to say my baby son was born yesterday,” the boy-bander, 24, wrote. “He is healthy and pretty amazing :) I’m very happy!!”

Shortly after, Tomlinson tweeted, “Daddy daddy cool,” and a third message contained three smiley faces.

Tomlinson’s friend Briana Jungwirth gave birth to the baby boy on Friday, January 22, Us Weekly confirmed.

“Louis didn’t expect this, but he’s excited for it now,” an insider told Us in July. “He’s become very close friends with Briana this year and now they are looking forward to being parents. He’s definitely going to be there and be a great dad for their baby.”

Tomlinson will have plenty of time to spend with his little guy, as One Direction have split. Us Weekly exclusively revealed on January 13 that the British boy band didn’t renew their recording contract and the four singers want to launch solo careers.

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