Kate also pens a personal essay for InStyle titled "Sometimes I Feel Like a Bad Mom," and admits that while she enjoys time to herself, it's definitely hard to be away from her children. Along with Ryder, Kate has a son -- 4-year-old Bingham -- with her ex-fiance, Muse frontman Matt Bellamy.
"Some days I feel like I should win best mom of the day award, and some days I find myself doing strange things that don't have any real purpose, in faraway corners in my house, and I realize I am literally and deliberately hiding from my children. ... Even as I write this, I am traveling for a week away from my children to promote my book, Pretty Happy, and I'm so happy to have some time to myself and excited to have this experience," Kate writes. "But there's this tight, pulling sensation that never goes away that it comes at the cost of missing a week of my children's lives, and it aches."
"[But] I wouldn't be the best mom I could be if I didn't follow my creative endeavors," she continues. "I would feel an emptiness that would be felt in our home. So a stay-at-home mom will never be my life and that will never be my kids' experience of me."
ET caught up with Hudson last October at the grand opening of her Fabletics boutique in New Jersey, when she shared that even Ryder recognizes his mom looks a lot younger than some of his friends' mothers.
"I think he's starting to realize how young his mom is to be the mom of a tween, because he comes back and he's like, 'Mom, all my friends are like, How old is your mom?'" she said.
"I really want more kids. You know, anywhere between four and six,” she told SiriusXM radio host Jennifer Hutt. "I just love them [kids]. They're a pain in my a**, and they're the best pain in my a** ever."
"I just love every bit of it," she continued. "I love the insanity. I love the chaos. I love laughing with them. I love when I gotta raise my voice at them. I love gathering them all together. I love when I have all the kids."