"This is big for me, I'm actually pregnant," Wolfe said on the "Today” show. "I'm quite pregnant, actually."
Wolfe, due in late August, also revealed she will be keeping a diary-syle blog about her pregnancy. "It's... about documenting my fears, funnies and follies that come with doing this for the first time. I've never changed a diaper... I don't really understand what a breast pump is."
Wolfe and Gosk have been together for three years.
"Weekend Today" anchor Jenna Wolfe announced on Wednesday that she is expecting a baby girl with her partner, NBC news correspondent Stephanie Gosk.