"Deanna and I are overjoyed about this double blessing," Daughtry, 30, said in the statement. "Thank you for your expressions of love and support and for respecting for our privacy during this special time."
The babies, who are due in in November, were conceived via IVF and – due to Deanna's partial hysterectomy four years ago – were transferred to a gestational surrogate who will carry them to term.
The American Idol alum and his wife are already parents to son Griffin and daughter Hannah.
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