"My kids have the biggest personalities ever," Simpson said. "I know every mom would probably say that about their children, but I guess I’m just one of those moms who likes to brag about how adorable their kids are."
Simpson, who said she's "been in the studio all week" working on a new album, admitted that she thinks her kids have what it takes to be singers themselves when they grow up.
"[Ace] has perfect pitch. He’s got such good tone. He can sing so well," Simpson said, adding that because he's so young, "the words don’t always come out correctly."
"It’s cute, they both love music and they like to dance and circle around each other," she said. "My daughter is trying to learn to break dance at the moment, she has one move --she puts her hands down and puts her leg up like she’s break dancing."
According to Simpson, one of her daughter's favorite artists is "Nicki Naj." "Not Nicki Minaj, 'Nicki Naj,'" she said, laughing. "That’s her inspiration at the moment."
While she feels that her children "are stars" in her own eyes, the 35-year-old entertainer said she would never want to become a stage mom.
"I would never force the entertainment business on them," Simpson said. "But I do think they’re already more talented than me."
While Simpson clearly adores her little ones, she told ET in September that there are "no more kids on the horizon" for her and Johnson, adding that getting pregnant again "would freak me out a little bit." Check out the video below to hear more.