Rascal Flatts' Jay DeMarcus and Wife Welcome New Son!

It's a boy! Rascal Flatts singer and bassist Jay DeMarcus, and his wife, Allison Alderson, welcomed a son yesterday afternoon. The couple already has a daughter, almost-2-year-old Madeline Leigh, and now they have the combination everybody hopes for!

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Dylan Jay DeMarcus was born in Nashville, Tenn., weighing in at 7 pounds, 11 ounces. Mom Allison, a former Miss Tennessee and CMT personality, is resting comfortably; everybody's healthy!

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Jay took to Twitter to thank his fans for their messages of congratulations. "Thanks everyone for all the well wishes!! Dylan Jay was born yesterday at 4:02pm.. He's gorgeous, just like his dad," he joked.

Congrats to the whole family!