People writes that Fey revealed the good news during taping of The Oprah Winfrey Show on Wednesday whilst promoting her new memoirs 'Bossypants'.
This will be Fey’s second child with her composer husband Jeff Richmond.
Watch Tina (less pregnant) on brand new 30 Rock tonight at 10pm only on Comedy Central.
Alec Baldwin says 30 Rock will end next year.
Tina Fey talks 30 Rock and Sarah Palin in 'Bossypants'.
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