Tina Fey is promoting her new memoir Bossypants, and I’ve been hearing so many good things about it. Lainey recently wrote that it’s laugh out loud funny, and the commenters on Amazon are raving about it. I’ll probably get it on iBooks or Kindle and read it this weekend. (There’s no price difference, but sometimes there is so it’s worth it to check. iBooks has an “enhanced edition” though that’s a dollar more at $13.99.)

Anyway I’m so surprised to hear that while Tina was filming a taped appearance on Oprah yesterday she dropped the news that she’s five months pregnant! She also has a five year old daughter with her husband of ten years, Jeff Richmond. If you’re a celebrity with good news, who better to tell it to than Oprah?

Tina Fey has some big news to talk about!

During a taping of The Oprah Winfrey Show Wednesday, Fey revealed that she’s expecting her second child.

The 30 Rock star is five months along, her rep confirms to PEOPLE. Fey and her husband, composer Jeff Richmond, also have 5-year-old daughter Alice.

Fey, 40, shared the news during an appearance to promote her new book, Bossypants, and an upcoming Saturday Night Live reunion. Oprah’s chat with Fey is scheduled to air April 12. – Julie Jordan

[From People]

Kaiser and I didn’t expect Tina to have another baby at all. In an article published in the New Yorker in mid February, Tina mused about whether she wanted a second child, and wrote “Am I just chasing it because it’s the hardest thing for me to get and I want to prove that I can do it? Do I want another baby? Or do I just want to turn back time and have my daughter be a baby again?” She was probably already pregnant at that point, (she may have written it a month or two before, but she would have been pregnant then too) and that suggests that she was trying for a pregnancy and it wasn’t an oops baby.

It might be good timing for Tina. Unfortunately Alec Baldwin just revealed that 30 Rock is going to be ending next season for whatever reason. He told NY Magazine that “next year is our last year of the show” and explained that “Our contracts are expired [in 2012], and Tina is gonna have a big career directing films and writing.” The current season, Season 5, started airing in September and has two more episodes left this year, on April 14 and a one hour 100th episode special on April 21. There’s another year to go and presumably 20 more episodes planned for the 2011/2012 season. You just wonder how they’re going to work around Tina’s pregnancy. I would guess that they can’t wait to start filming until after she has the baby late this summer and will have to work it in somehow.

That’s awesome and congratulations to Tina and Jeff!

Tina Fey is shown on the set of 30 Rock on 3/18 (window pictures and checked shirt, credit: WENN) and 3/22 (cleaning up trash, credit: Fame.) They seem to be covering her up for now.