"We are absolutely thrilled! She's just so perfect, the cutest little nugget you've ever seen and I swear I'm not biased," Rosenbaum said in a statement to ET on Friday about the birth of his daughter. "She's a happy and healthy baby girl and we couldn't be more grateful! Our family of four now feels complete."
Hebert and Rosenbaum got engaged on the season finale of The Bachelorette in 2011, and married in a televised wedding special a year later.
ET spoke to the latest Bachelorette couple, JoJo Fletcher and Jordan Rodgers, in September at the iHeartRadio Music Festival, where the two shared that they were also open to having a televised wedding.
"I think it's definitely a question, but right now we're just really enjoying being together," Fletcher said. "You know, it's funny, we got to be together on the show, but we haven't really dated. So, this has been such a fun time to move into our first home together, and to go on dates."