"Baby girl Lachey is finally HERE and we couldn't be happier!!!," Vanessa captioned an Instagram shot of herself holding her little one's hand. "Thank you for all of the love and support, we are over the moon!"
The proud mom continued to gush over her baby girl on her blog, where she also revealed their daughter's name. "Nick, Camden and I are SO excited to announce the birth of our sweet, beautiful baby girl, Brooklyn Elisabeth Lachey! She was born January 5th, 2015 at 5:17pm. She weighed in at 7 pounds 15 ounces, is 21 inches long and has already won over all of our hearts," Vanessa wrote.
"I have been dreaming of this moment for as long as I can remember, the day I was going to meet my little girl," she continued. "A friend recently told me how magical today was going to be because it's the day I would meet my best friend. 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! Thank you to everyone for your love and support, it means so much to our family."
This is the second child for Nick and Vanessa, who tied the knot in July 2011, and welcomed son, Camden, in September 2012. Congrats to the couple!