Kelly Osbourne admits she secretly underwent ‘gastric sleeve’ weight loss surgery to help her drop 80 pounds

"I had surgery; I don’t give a f**k what anyone has to say," she admitted.

"I did it, I’m proud of it, they can suck s**t. I did the gastric sleeve.

"All it does is change the shape of your stomach. I got that almost 2 years ago. I will never ever ever lie about it ever. It is the best thing I have ever done."

The Fashion Police alum further explained: "I want to be very clear about this kind of surgery I had. I didn’t have a gastric bypass.

"The kind of surgery I had… if you don’t work out and you don’t eat right, you gain weight. All it does is move you in the right direction. [...]

"What people don’t realize is, it cuts out this hormone that if you have addiction issues, it stops your craving and it makes you not emotionally eat which is a huge problem for me.

But it was a procedure she got done on her face that really took her image to the next level.

"I had really bad TMJ (pain in the jaw joint). One of the things they did to stop it was they gave me injections in my jaw.

"It kinda made my jaw look skinnier. That’s when people started to notice that I had really lost weight because it changed the shape of everything.

"I found out it’s called buckle fat. It changed everything on my face!"

The rocker's daughter further explained that she doesn't "crave alcohol at all anymore" after her surgery, which helped in her journey towards sobriety.

The reality TV show star then dived more into the world's reaction after the news photographed her looking much slimmer.

"What I’ve realized is, people only pick up on your journey when you’ve arrived at your destination," she said.

"This has been two years of me working on this.  Figuring out if I wanted to be in this industry, figuring out if I was even capable of even losing this weight. I did, and I figured out I wanted to keep going. I didn’t do this for anyone.

"It was a long process, and now I’m here and everybody is noticing. I woke up one day and I was all over the newspapers and sites. I had literally hundreds of text messages."

Kelly even claimed she got asked out seven times when her weight loss was a topic of interest, but she rejected every single offer.

Kelly recently showed off how she's shed the weight while shopping at Neiman Marcus last Saturday.

She posted a photo of a “Size 26” tag captioned: “Yes… I’m bragging because I worked hard and it feels good!!!”

She recently also responded to a comment from the mother of The Real’s Jeannie Mai, who commented: “Oh my gosh, you lost a lot of weight.”

She replied: "That’s right mamma Mai, I lost 85lbs since I last saw you. Can you believe it?"

Kelly's weight loss journey revved up in 2009 when she competed in Dancing With the Stars.

She dropped 20 pounds crediting her dance partner Louis van Amstel with helping her lose the weight, saying: "He made me eat turkey burgers and salads and explained to me that a high-protein, low-carb diet would keep me energized.

"Then I started losing weight and realized, 'Oh, it's true what they say: Diet and exercise really work!'"

However, she gained the weight back after she left the show.

With the help of personal trainer Sarah Hagaman, and following a vegan diet, Kelly went on to drop another 30 pounds.

In an interview with Daily Express last year, she said: "Once I learned how to work out right and eat right, it’s one of those things that you just have to commit to a life change rather than being on a diet.”