Charlize Theron's kids' reactions to her work life are changing as they grow up.

Speaking with The Hollywood Reporter, the 47-year-old actress discussed how her children — August, 7, and Jackson, 10 — are becoming more aware of their mom's fame and career.

"In their heads, they're like, 'We know you work, but we're not 100 percent sure what you do,'" she told the outlet. "My younger one goes, 'Oh my God, Mom, it feels like you can't hold a job.'"

As Jackson gets older, she's starting to have different reactions to some of Theron's work, like her Dior ads.

"My older one, she's a pre-teen now, so there are moments, like, we're walking through an airport and [she sees me on a Dior billboard] and she's just like, 'Oh my God, you're on a f------ wall with no shirt, Mom. This is so embarrassing. Put a shirt on!' " Theron shared.

Laughing, she added, "And I'm like, 'That will pay for your college!' But deep down, like every mother, I just want to f------ impress them."

Theron also noted that she makes her kids aware of the fact that nothing is promised. "I always say to my kids, 'Don't assume it's going to be there tomorrow,'" she said.