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"Natalie and I are so anxious to meet our fifth mini-Hanson," Taylor tells the magazine. "As are the four siblings at home who are counting the days to the arrival."
In addition to playing with said siblings -- Ezra, Penelope, River and Viggo -- the newest Hanson can look forward to MmmBopping around with his or her four cousins. Zac, 26, has a daughter Junia and son Shepherd, while Isaac, 31, has two boys, Clark Everett and James Monroe.
If the next-gen Hansons aren't into bats and gloves, they could always start a rocking big band.