Hashian is the daughter of Sib Hashian, the drummer of the rock band Boston.
"The Late Late Show" host James Corden tweeted in December that he and his wife, producer Julia Carey, welcomed their third child, a girl.
Hashian, a singer-songwriter, showed signs of a growing baby bump.
Johnson also has a 16-year-old daughter, Simone, with his ex-wife and manager Dany Garcia.
" Dwayne and Lauren started dating in 2007 shortly after the actor split from his wife Dany Garcia, with whom he shares a 16-year-old daughter Simone.
star captioned a photo of 1-year-old daughter Jasmine on Monday, December 11.
Model Eniko Parrish and her husband, comedian Kevin Hart, have welcomed their first child, a boy.
Johnson also has a teen daughter, Simone, with his ex-wife, Dany Garcia.The former WWE wrestler turned Hollywood actor announced the news on Instagram Monday in a typically adorable way.Johnson shared a picture of his and Hashian’s toddler daughter, Jasmine, and wrote: “Our Jasmine Lia would like to make a big announcement - IT’S A GIRL!“We took the time to clean up the areas we weren’t communicating in the right way.We took a year after our divorce to really clean up.”Hashian released a music video for a track titled “Go Hard” earlier in 2017 along with Walter French.