A.J. McLean & Wife Rochelle Welcome Baby Girl

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AJ McLean and wife Rochelle Deanna Karidis attend the Los Angeles premiere of "Backstreet Boys Show 'Em What You're Made Of" at ArcLight Cinemas Cinerama Dome on Jan. 29, 2015 in Hollywood, Calif. 

Backstreet’s back with a new addition to the family.

A.J. McLean of the Backstreet Boys and his wife Rochelle welcomed a new baby girl, Lyric Dean, on Sunday. Lyric is the couple’s second daughter after 4-year-old Ava Jaymes. Rochelle took to Twitter to share the news:

McLean told PEOPLE, “Despite the fact that I’m an only child (and all jokes aside) turned out OK, my wife is one of four and that showed me there’s something beyond special about having siblings. Now, seeing the excitement and anticipation that Ava has about being a big sister is truly amazing, and the best feeling in the world. She’s been practicing for months with her dolls, and with some of my wife’s friends’ babies.”