Tina Fey is expecting her second child.

Her publicist confirms that the "30 Rock" star announced while taping an appearance of "The Oprah Winfrey Show" on Wednesday. Fey is about five months pregnant. Her "Oprah" appearance is scheduled to air next week.

Fey and her husband, composer Jeff Richmond, are also parents of a 5-year-old daughter, Alice.

The 40-year-old actress-writer is currently promoting a new memoir, "Bossypants."