20/12/2014 11:34 GMT | Updated 20/05/2015 10:12 BST

Kristen Bell And Dax Shepard Welcome Second Baby Girl

Kristen Bell and Dax Shepard are celebrating the arrival of their second baby girl.

Rob Latour/REX
Mandatory Credit: Photo by Rob Latour/REX (4142874ah) Dax Shepard, left and Kristen Bell 'The Judge' film premiere, Los Angeles, America - 01 Oct 2014

And, drumroll please, the acting couple have called her: Delta Bell Shepard.

Little Delta is the younger sister of the couple's one-year-old daughter, Lincoln.

Proud dad Dax took to Twitter to share the news, writing: "Delta Bell Shepard is here. She doesn't look like either @IMKristenBell or me, but we're gonna keep her anyway. #christmascameearly."

Frozen star Kristen, who always shows off a well-dressed bump, also tweeted the news, saying: "The estrogen has now hit critical mass! Good luck, @daxshepard1. And welcome to the world DELTA BELL SHEPARD :)."

Kristen Bell Debuts Second Baby Bump on Red Carpet

And, according to Hello! magazine, little Delta will receive a good reception from older sister Lincoln. Speaking to US Weekly, Kristen recently said: "She's very interested in the shape of my belly. Very interested in offering it water and crackers and giving it smooches.

"She could just be mimicking what we're doing. But I have a hunch she knows what's happening."

MORE! Kristen Bell gives us a lesson in baby bump style

In the same US Weekly interview, Kristen revealed a bit about her pregnancy cravings and diet.

She told the mag: "I just like food. If it can be digested, chances are I'll want it.

"[I eat] pretty much what I normally eat, which is fairly healthy, but I give in a lot more to cravings. It occurs to me more often how delicious Kettle chips are when I'm pregnant.

"I give into my cravings more often because if I'm not going to do it now, when will I do it?" Hear, hear!

Congrats to the second-time parents.

More stars expecting - and who welcomed - a new arrival in 2014.