The youngest One Direction fan is on its way. Louis Tomlinson is expecting his first child with Los Angeles-based stylist Briana Jungwirth.

"Louis is happy and very excited about becoming a dad and he thinks Briana will be an amazing mother. It was a surprise at first, but he and Briana are very, very close friends and this has brought them even closer," a mutual friend of the couple told People. 

Tomlinson and Jungwirth, who met through a mutual friend, are not in a romantic relationship, but are "super excited" about becoming parents. The boy bander has reportedly said he will be a very "hands on" dad and will be by Jungwirth's side throughout the pregnancy.

"Louis and Briana care about each other very much and have spent a lot of time together privately over the last few months," the source added. "They are both really happy and although they aren't in a relationship, their friendship is extremely strong and they are both really excited about the baby. It's early days and Briana and the baby's health are the most important things right now."

As far Tomlinson's baby mama, a source said that "is a really lovely girl; she's absolutely not interested in Louis' fame. She's very private and most of the time they spend together is out of the public eye, just hanging out with their friends."

The pair's bundle of joy is due next year.