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Backstreet Boy A.J. McLean and his wife Rochelle DeAnna Karidis are expecting their first child together.

The couple made the announcement on Sunday via YouTube.

"Because we love you all so much, we wanted to share with you -- for the first time -- something very special," said A.J., who stalled for a dramatic pause. "We're having a baby!" A.J., 34, and his wife declared in tandem.

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The couple has wasted very little time in starting a family, as they've only been married five months, having tied the knot in Beverly Hills on December 17, 2011.