The Wipeout host said that she looking forward to see what it's like having a baby while working.
"It was easy to bring the baby to set, you know what I mean?" Lachey told Us Weekly.
"He's just there [in my belly]: I don't have to bring a car seat, I didn't have to feed him, I didn't have to change his diaper," she continued. "Next season will be interesting having a baby and working."
Lachey's husband Nick Lachey previously told the website the couple are enjoying their last moments of freedom before the baby arrives.
Earlier this month, Vanessa revealed that she originally believed she would give birth to a baby girl.