Kings of Leon drummer Nathan Followill and singer-songwriter wife Jessie Baylin, 28, welcomed their first child, a healthy baby girl on December 26.
The 33-year-old new dad tweeted about their happy arrival, on the 27th: "I can proudly announce the birth of my sweet angel Violet Marlowe Followill. My heart has been stolen and it feels so good."
The baby was born in Nashville at 4:01 pm, weighing 7 pounds, 13 ounces, says a rep for the Grammy-winning "Sex Is on Fire" band.
Violet is the latest addition to the band's Followill family, with singer Caleb Followill welcoming daughter Dixie Pearl in June with his model wife Lily Aldridge and guitarist Matthew Followill welcoming son, Knox Cameron, last May.
The band canceled their U.S. tour due to exhaustion last year. With so many babies and a new album expected next year, try and get some sleep, guys.
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The Lost In Translation beauty took charge of the promo for Hurry Hurry, which features Baylin strolling along a bridge, and the rising Nashville, Tennessee artist is full of praise for her childhood friend's directing talents.
Baylin says, "She is an incredible director and is going to do wonderful things from behind the lens. We've known each other since we were girls, so she knows who I am and allowed me to just be myself."
But Johansson isn't Baylin's only celebrity link - she's married to Kings of Leon drummer Nathan Followill.
Celebrating the release of the single on Tuesday (17Jan12), Followill tweeted, "Good morning. I'm so proud 2 (sic) say that the new @JessieBaylin record is out. Buy it on itunes, do it. Doctors (sic) orders. Congrats baby doll."
Johansson has previously directed the short film These Vagabond Shoes and she is due to make her feature film debut as a moviemaker with the upcoming big screen adaptation of Truman Capote's Summer Crossing.