Khloe Kardashian, formerly known as “the fat, funny one” according to her, won’t be hearing that comment anytime soon – at least about the fat. Khloe’s shed a whopping 20 pounds in four weeks, and claims to have done it in a healthy way. All the magazines are singing her praises, though I can’t help but wonder how one can safely lose that much weight.

As a bathing-suit-clad Khloe Kardashian stood by the pool at NYC’s Hotel Gansevoort on July 9 at her exclusive photo shoot with Life & Style, she appeared to be a woman without any body insecurity. But things were very different for her growing up. “I used to get teased all the time as a kid,” the reality-TV star tells Life & Style. “People [even in more recent years] would come up to me and be like, ‘Oh, you’re the fat, funny one.’ I would wonder, is that who I am?”

Khloe’s still funny, but no one can call her fat anymore. By working out about 45 minutes a day, five days a week, and maintaining a balanced, practical diet, she shed 20 pounds from her 5-foot-9 frame over four weeks. “I’m now a size 6, but I’ve been up to a size 10 in the past,” says the 25-year-old, who stars with her closeknit clan on E!’s Keeping Up With the Kardashians and co-owns the upscale boutique Dash with her sisters.

Khloe says she started emotionally eating when her parents, Robert and Kris Kardashian, were going through a divorce. “You just don’t understand stress like that when you’re younger,” she says. And her roller-coaster eating habits meant she also took dieting to a dangerously extreme level. “I was anorexic when I was 15 — I’d be obsessed with working out, and I’d never eat,” says Khloe. “That was the worst I’ve ever been. I’ve been very underweight and then overweight by about 30 pounds.”

After packing on the pounds again after her dad’s death in 2003, she expressed interest in working out, and Kim gave her that extra push. “We just started doing it together,” says Khloe, who adds that she and Kim, 28, both have a sweet tooth and keep each other’s snacking habits in check. “Just having someone’s encouragement makes it so much easier.” Kim’s happy to help. “I’m so proud of Khloe,” she tells Life & Style. “She looks amazing.”

[From In Touch Weekly]

Though In Touch doesn’t mention it, Khloe tells Us Weekly that part of her routine is letting herself eat whatever she wants until noon, then paying attention to what she eats. She also says that she and sister Kim are launching a diet “product” called Quick Trim. I assumed diet pill and was wondering exactly how either of them created one. If it is a pill they’re obviously just endorsing it. But since all she said was “product,” it could be a diet plan or a contraption of some sort. It’s probably just the eating and exercise plan Khloe followed to drop so much weight so quickly.

I’ve definitely teased her in the past, but honestly I’ve always felt badly for Khloe. First off she wasn’t that heavy, she just looked huge next to her tiny sisters. And it wasn’t the weight so much as the fact that she has a much larger frame than both of them. I can hardly remember a photo of Khloe where she wasn’t described as “hulking.” While I still think 20 lbs in 28 days is extreme, I will admit that Khloe looks very nice. Not too thin and still curvy where she should be. I’m going to hold my tongue on this Quick Trim business until she and Kim release it.

Update: According to Backseatcuddler, Quick Trim is a cleanse that the Kardashians are launching with GNC. It sounds like it might be similar to the Master Cleanse – there was a mention of lemonade and pepper.

Thanks to PopCrunch for the lead!

Here’s Khloe at the Aces and Angels Celebrity Poker held at the Playboy Mansion on Saturday. Images thanks to WENN.com .