LOS ANGELES (Hollywood Reporter) - Tina Fey is showing no signs of slowing down.

Not only does she have a new book out, a hot NBC sitcom "30 Rock" and a second baby on the way, she plans to host "Saturday Night Live" for the third time.

She is set to appear on the May 7 show.

No word whether she will reprise her role as Sarah Palin.

Fey taped an episode of "The Oprah Winfrey Show" this week and revealed that she is pregnant at age 40.

In her book "Bossypants," which was written before she announced her pregnancy, she debated whether to have a second child, worrying that being pregnant would leave her "unemployable."

Ultimately, Fey decided that having another kid was more important than her career.

"What's so great about work anyway?" she writes. "Work won't visit you when you're old. Work won't drive you to get a mammogram and take you out after for soup."

(Editing by Zorianna Kit)