ET spoke with the 37-year-old fashion designer as she was honored at the 40th Annual Outstanding Mother Awards at the Pierre New York Hotel on Friday, where she opened up about raising 6-year-old daughter Maxwell and 4-year-old son Ace.
"The fact that people think I'm doing a pretty good job [as a mother] is the best compliment," gushed Simpson, who walked the red carpet with her own mom, Tina. "The most rewarding part of being a mother is really just watching my kids grow. It's like, how much knowledge they have about life is just so meaningful to me, and how much heart they put into everything they do. There's just nothing like the innocence of a child."
The Dukes of Hazzard star admitted it's not easy balancing work and motherhood, but said the key is keeping her creativity, while remaining loyal to her kids. And this Mother's Day, that means a low-key celebration.
"I'd love to just, like, hang out and do a picnic, because we've been in New York and going to Broadway and all kinds of stuff, so for my kids to just bring me some breakfast in bed, do a picnic outside, would be great," she said, before raving over her family's experience watching Frozen on Broadway.
"It was such a beautiful experience and, as a mother who loves theater, it was really cute to watch them have fun," she shared. "[Maxwell] was definitely all into wanting to be Elsa."
Little Maxwell definitely has a love for performing. Simpson threw her daughter an epic Greatest Showman-themed party when she turned six earlier this month. "My daughter's favorite movie is The Greatest Showman. We've seen it, literally 100 times, at least!" Simpson explained of why they just had to go all-out for the bash. "Maxwell was doing flips and we were celebrating all types of people, unique, everybody's unique[ness] and individuality."
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Jessica Simpson Jokes She and Husband Eric Johnson 'Always Practice' Making Babies! (Exclusive)
Simpson is still working on Ace's upcoming fifth birthday next month. "Ace just wants some parrots and baseball, so we'll see how they put that together," she said.
As for the mother of two's greatest parenting hack? She said she prefers singing the national anthem over lullabies. "Any mother that's a little bit afraid of the lyrics in lullabies, like, 'When the bow breaks, the cradle will fall and down will come baby, cradle and all?' That's scary! You're, like, dropping your baby!" she hilariously pointed out. "So, I just say, sing the national anthem."