It's unclear how the couple decided on "Miller," but according to Scott, there was one name that was definitely not in the running.
"Counting down days until kid #2 arrives," he tweeted on Oct. 29. "Any day now. I think we have a name, but open to suggestions...please don't say Bailey..."
Miller is the second child for the couple, who married in 2004. He joins older brother Jackson Kayse, 3.