The seventh-season The Bachelorette star and Rosenbaum appeared on the show's The Men Tell All special Monday night and pretended to find out the sex of their baby for the first time. After learning the news they're expecting a baby boy, both soon-to-be parents acted surprised and thrilled.
"Its a BOY!!!!!!!!! :))))) We're thrilled!!!" Hebert tweeted in late April.
Prior to Hebert's tweet, Rosenbaum had been joking around on Twitter about whether they'll be dealing with "jockstraps or tampons."
During The Men Tell All, a doctor conducted an ultrasound right on the stage and the sex of Hebert and Rosenbaum's baby was revealed.
Hebert acted like she was happy to discover she's pregnant with a boy and insisted she had a feeling for a while that was the case. Rosenbaum grew teary-eyed and said he's looking forward to watching sports with his son and having the "Rosenbaum" name live on.