Erica (l) and Tina Campbell of Mary Mary on "Good Morning America" (July 19, 2011)

*Erica Campbell of gospel duo Mary Mary and BET’s “Sunday Best” chose ABC’s “Good Morning America” to announce she is expecting .

The singer said she and her husband, producer Warryn Campbell, are anticipating the arrival of their third child early next year.

“We have two incredible children and can’t wait to see what our newest bundle of joy will be like!” said Campbell. “We’re grateful for all of our blessings, but this is the biggest of all.”

Erica and her sister Tina were on “GMA” to plug their involvement in a new Red Cross initiative that helps victims of disasters.

Watch their entire “GMA” visit below.