Celebs are renowned for giving their newborns adorable, alternative names so this one sounds pretty likely, right?!
A source told The Sun: "Louis and Briana are yet to file a birth certificate but they've agreed on the name Sydney Rain. It will be rubber-stamped in the next five days.
"It's not yet known whether the baby boy will take Briana's surname or Tomlinson."
Louis confirmed on Saturday (23 January) that the baby had arrived safely, telling his 21 million followers: "I'm pleased to say my baby son was born yesterday :) He is healthy and pretty amazing :) I'm very happy!!"
On Friday it was revealed that Briana had delivered their son in a Los Angeles hospital, and it's believed that Louis was Briana's side as she gave birth.
Louis and Briana have both kept details of the pregnancy and birth private, however Louis did confirm that he was becoming a first time dad in a very public manner during an interview on Good Morning America, when he told fans he was "buzzing" for the arrival of his first child.
Loving this quirky name?
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