It's another girl for the happy couple and she's got a unique name like her big sister Lincoln (traditionally a boy name).

The happy couple welcomed Delta Bell Shepard into the world and announced it via Twitter on Friday, Dec. 19.

"Delta Bell Shepard is here. She doesn't look like either ?@IMKristenBell? or me, but we're gonna keep her anyway. ?#christmascameearly?" Shepard tweeted.

The proud mom also tweeted, "The estrogen has now hit critical mass! Good luck, @daxshepard1 . And welcome to the world DELTA BELL SHEPARD :)"