Khloe Kardashian Explains Why She Chopped Off Her Hair and How She Lost 40 Pounds

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Khloe Kardashian is looking hotter than ever!

The Keeping Up With the Kardashians star was a guest on Live! with Kelly and Michael on Friday, where she revealed the reason behind her dramatic new 'do, which she debuted in October.

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"I cut all of my hair off because I was in the hospital, and I just felt like I needed … to get rid of this negativity," she explained. "You shouldn't do haircuts when you're that emotionally confused, but I did, and I love it, though! It's so much easier."

Not only did she chop off her then-brunette locks, but she also gave them a brand new hue. "I slowly started going blonde," she said. "I was doing the ombré thing, and then little by little, I started going blonder and blonder."

Khloe isn't the only celebrity who's sporting a chic lob -- a slew of stars have traded in their long locks for the trendy look, including Hilary Duff, Salma Hayek, Jenni "JWoww" Farley, Jennifer Lawrence and Kirstie Alley.

WATCH: 2015's Best Revenge Bodies: Khloe Kardashian, Kaley Cuoco & More!

Khloe also opened up about her diet and exercise routine, revealing that over the course of three years, she's lost "about 40 pounds."

"For me, it's about lifestyle changes," she said. "I dieted forever -- I'm a yo-yo dieter, yo-yo weight gainer -- and I was like, 'Ok, I need to make a change.'"

"It's not about losing 30 pounds in 30 days -- that's unrealistic," she continued. "So, I started making lifestyle changes and working out often. I started slow. It's been about three years, and I've kept the weight off."

Khloe admitted that her healthier routine wasn't easy at first. "For the first two months, I was like, 'What? I am sweating, I'm busting my a**, I'm tired, I'm hungry,' and whatever, [because] you don't notice anything," she explained. "But you just keep on going. Obviously something's going to happen, but your body takes a minute for that change to show. And the tortoise wins the race. So that's what I want to do, and I want to keep it off forever."

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Hear the full interview in the video below.

Since shredding the weight, the 31-year-old reality star has been flaunting her fit figure in body-hugging dresses and stripping down for photoshoots.

Last month, Khloe shared pics from her St. Barts trip, in which she bared her booty in a fully nude, glitter-filled shoot.

"We started drinking a little and somehow this impromptu photo shoot turned into a fully nude photo shoot," she explained on her website. "I was apparently living in the moment."

Indeed! See the photos in the video below.

WATCH: Khloe Kardashian Bares Her Naked Butt in Glitter-Covered 'Revenge Body' Pics

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