The "Frozen" actress stops by Thursday's "The Ellen DeGeneres Show" where Ellen puts her through a "Naked and Afraid"-like obstacle course. The crazy series is one of Kristen's favorite shows.
Check out the video above to see the blonde beauty's amazing figure in her nude body suit and see if she comes out of the challenge unscathed!
How amazing does the 33-year-old look in that skin-tight getup?! We can't believe how great she looks just a year after welcoming her daughter Lincoln with hubby Dax Shepard!
The "Veronica Mars" star also opens up about her fight to end the circulation of paparazzi photos of celebrity children.
"We started what were calling the 'No Kids Policy' and we just wanted to kinda start a public conversation about the fact that children under no circumstance should be followed by strangers. With or without a camera it just should never be okay," she tells Ellen.
Check out "The Ellen DeGeneres Show" on Friday for Bell's full appearance!