Nick and Vanessa Lachey Welcome a Baby Girl

— -- Nick and Vanessa Lachey's family just got a little bigger.

The couple welcomed their second child, daughter Brooklyn Elisabeth, on Jan. 5, Vanessa announced on her website. The baby weighed 7 lbs., 15 oz., measured 21 inches long and "has already won over all of our hearts," the proud mom added.

"I have been dreaming of this moment for as long as I can remember, the day I was going to meet my little girl. A friend recently told me how magical today was going to be because it’s the day I would meet my best friend," she wrote. "I can’t even begin to tell you how it felt to hold her in my arms for the very first time. Mommy, Daddy and big brother Cam love you so much already, Brooklyn!"

In November, Lachey, 41, told ABC News that he and his wife, 34, had already chosen a "cool" name "with meaning" for the baby. They'd also begun to prepare their 2-year-old son Camden for what was to come.

"I don’t know that he’s fully realized what’s going on but he definitely knows his baby sister's in mommy's belly, and he says 'good night' and 'I love you' to her," the "Big Morning Buzz" host said. "It's when she's here and stealing all his thunder and attention that it's really going to set in, but it'll be exciting!"