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Louis Tomlinson, Briana Jungwirth

Splash News/Getty Images

Louis Tomlinson is one proud papa.

Earlier this week, the British One Direction singer became the first member of the pop group to become a dad when Briana Jungwirth, a Los Angeles stylist who was romantically involved with him in 2015, gave birth to their baby boy.

"I'm pleased to say my baby son was born yesterday :)," Tomlinson said on Twitter early Saturday, in what marked his first public comment about the child's birth. "He is healthy and pretty amazing :) I'm very happy!!"

The child's name was not revealed. Jungwirth has not commented.

E! News confirmed she and Tomlinson were expecting a baby in July. The singer later said on Good Morning America, "Obviously it's a very exciting time, so I'm buzzing."

Tomlinson's fellow One Direction singers have not commented directly about the happy news, although Harry Styles appeared to post a celebratory tweet.

"Flowers all around," he wrote late on Friday.

Soon after news of his and Jungwirth's baby's birth was confirmed on Friday, Tomlinson was spotted wearing a hospital band while shopping in Los Angeles.

Not spotted was Danielle Campbell, who has recently been linked romantically to the singer. While the two have not confirmed a relationship, Tomlinson and The Originals actress have been photographed together several times over the past few weeks, most recently in London just before New Year's Eve.