ET's Nancy O'Dell was with Lopez during rehearsals for her It's My PartyTour, which kicks off June 7 in Los Angeles, where she praised her daughter's "amazing" voice.
"She's got her daddy's voice. She's amazing," Lopez expresses. "It's natural. Emme could always sing. I remember when she was in the crib, when she was a baby, she used to be humming, like, really humming to herself. And Marc would say, 'She's singing, it feels good to her, it feels good to her soul and to her body,' because he was like that. I was like, 'You think she's singing?' And he was like, 'Yeah, yeah.' And he was right, and she's always, since she was little, she could always sing."
So will fans be seeing Emme on stage during her tour? "Only if she wants to," Lopez replies, adding that she never wants to force her daughter into anything.
"Like, when she wanted to do the 'Limitless' video, I was very, very wary of letting her do it," she explains. "But she was like, 'Please mom, don't pick another little girl. Pick me. I can do it.' And she did. She was amazing."
"It was a special, special moment," continues the performer, who has also been sharing tour rehearsal videos featuring her daughter on her YouTube page. "If she wants to and she feels comfortable. It's a big arena. It's different than our Vegas show. It's different than other things that we've been doing -- it's different than filming a video. I think she's come out of her shell in the past couple years."
Lopez, however, says that if her daughter is truly interested in showbiz she will support her, but with the knowledge that "it's a lot of work."
"And it's a lot of scrutiny and you really put yourself out there in a way," she explains. "And now, in this age of social media, where people can be so brutal and mean at times, I don't want her to put herself any more out there than she is. They're not on social media yet."
"Listen, if she was going to do it, there's nothing I could do to stop her," Lopez says. "I know that from being an artist myself. Nobody can stop me from doing what I love to do. She's going to do it. But I would never push her in any direction. I'd always help her as much as I can and give her as much counsel and advice as I can and mentor in the best ways I know how to navigate."
Ever the multi-tasking mom, Lopez even planned her upcoming tour -- for which she's been rehearsing "nine, 10, 11 hours" a day after wrapping on her upcoming film, Hustlers-- to coincide with her kids' summer break from school. And it's also the perfect time to be throwing a massive party on stage every night, as Lopez turns 50 on July 24!
"This year's a really big year for me... it was just like a perfect storm," the age-defying star says of planning the tour, which will be a "big celebration" with her family and fans. "I was like, we could all be together, we can have like, a special moment, and I can share that with my fans."
"I've just been on this journey -- my life has been about my work and my family, and to have all of that kind of converge on this big birthday of mine, I think was perfect," she adds. "And I just feel like it's gonna be a really, really special time."
Be sure to tune into Tuesday's episode of Entertainment Tonightfor even more from our exclusive interview with Lopez, where she talks wedding plans and what fans can expect from her tour.