Video: Jenna Wolfe announced on NBC "Today" she is pregnant

Jenna Wolfe, a Haitian NBC "Today" news anchor, announced on the morning show on Wednesday that she is having a baby girl and the baby is due on August 27 and that she will keep a diary-style blog about her pregnancy.

"This is big for me, I'm actually pregnant," Wolfe, who is the anchor for "Weekend Today," said. "I'm quite pregnant, actually."

"It's ... about documenting my fears, funnies and follies that come with doing this for the first time," Wolfe wrote in her first entry. "I've never changed a diaper ... I don't really understand what a breast pump is."