Jenny showed off a remarkably slim frame as she attended the Mary J. Blige Honors Concert in New York Sunday night. But homegirl isn’t the only American Idol alum to get lose weight. Click here if you want to see the latest AI Skinny Girl.

I’m not hating on Jennifer, I think she looks fantastic. It’s obvious she is working hard. She is as toned as she is thin. But I think her people are crazy if they think we believe she’s only lost 4 dress sizes and 29 pounds.

Here is Jordin last year:

And here she is now…slim and fierce!

So if you believe all the OK stories about Brit’s weight loss she weighs about 78 pounds now.

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.”

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