Thompson Square have welcomed a new addition to their family! The happily married couple announced via Twitter that they are now officially Aunt Shawna and Uncle Keifer, posting an adorable photo of their brand new nephew and his proud father.

"My Bro Tracy and my new nephew Hayden.:)," the husband and wife duo tweeted late Monday.

Fans hoping for baby news from the 'Are You Gonna Kiss Me or Not' singers will most likely have to wait a bit longer, however. The duo will tour heavily the remainder of the year, and are currently on the road as opening entertainment on Lady Antebellum's Own the Night Tour, with dates schedules throughout the rest of the year.

Not to mention that they've already got their parenting hands full with their fur baby, Etta -- the Schnauzer/Yorkie puppy they adopted in May. Musically speaking, the pair is currently climbing the chart with their latest single, 'Glass.'