Let the parenting games begin!
"Leni James Ludwig decided to come on her own schedule 4 weeks early," the pair wrote in their joint May 2 post. "Born 4/27/23 at 7:24am. @alexanderludwig was in another state filming and made it back just in time. A labor story for the books."
Vanessa Hudgens, who is currently filming Bad Boys 4 with Alexander, commented, "DREAM TEAMMMMM."
The 30-year-old also posted the family's mirror selfie on his Instagram Stories, writing, "I'd run through a building for these girls."
Alexander also shared a pic of himself cuddling the infant as she sleeps on his chest. He captioned the photo, "Dad mode activated."
Laura followed up her and Alexander's baby announcement with a close-up photo of baby Leni, writing, "The most perfect 6lbs I could ever dream of."
Alexander's Vikings co-star Katheryn Winnick commented, "I'm in love already!!!"
Several months later, the couple announced that they were expecting a baby in May. In fact, they shared the news with a mirror selfie showing Alexander cradling Lauren's bare baby bump—which they replicated with their birth announcement.
, "It's been a long road, and we wanted to wait until things were looking promising this time around," Alexander captioned the Feb. 10 post. "Thank you guys for all of the support. We couldn't be more grateful."
For the latest breaking news updates, click here to download the E! News App