It's been quite the week for Tina Fey.

After the release of her book Bossypants which received raving reviews, People.com is reporting that the 30 Rock actress is pregnant with her second child.

During a taping of The Oprah Winfrey Show Wednesday, Fey revealed that she is pregnant. Fey is reportedly five months pregnant. She and her husband, composer Jeff Richmond, already have a 5-year-old daughter named Alice.

The 40-year-old actress shared the news during her stop on The Oprah Winfrey Show to promote her new book Bossy pants and upcoming Saturday Night Live reunion.

The episode of The Oprah Winfrey Show will air April 12.

Fey has been in the news a lot this week, as on Wednesday her 30 Rock co-star Alec Baldwin announced that the hit NBC show will be ending next season.

Baldwin announced that Fey is definitely leaving the show to pursue other aspects of her career.

Our contracts are expired [in 2012], and Tina is going to have a big career directing films and writing. She's going to be the next Elaine May. She'll be great, he said.