Vanessa Lachey introduces baby Camden John

Awww ...

He arrived on Sept. 12. And now look at him!

Vanessa Lachey shared a photo on Monday of her baby boy. "Nick and I are honored and humbled to introduce you to the new Love of our lives, Camden John Lachey."

Vanessa, 31, and Nick, 38, who married in 2011, have been proudly gushing about the newborn.

Days after the birth, Nick tweeted, "Officially in cheesy dad mode. Camden is easily the most amazing thing that has happened in my life. Vanessa and i are truly blessed!"