"It is exciting," says PEOPLE's Most Beautiful Woman. [But] I feel a little nervous. I enjoy being a mother. [Performing] is like going back to my old job. It's a little strange."
The "Single Ladies (Put a Ring On It)" singer also understands, though, how crucial it is to have a life outside of family.
"It's important that … you have your own passion," she says, adding during a session with her tour crew, "What I'm trying to say at this show is 'Yeah, I just had a baby, but it just made me more grounded and more like you.' "