Kim Kardashian wears sexy see

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Kim Kardashian showed off her 50-pound weight loss Wednesday night, wearing a see-through lace dress for the late night show stop.

Kim Kardashian has a certain 'glow mom thing' about her, Jay Leno said Wednesday night when the reality starlet stopped by 'The Tonight Show.'

Wearing a see-through white lace dress with black undergarments, Kardashian, 33, told the host that she's in a very happy place, thanks to her new engagement to boyfriend Kanye West, life with their 4-month-old daughter North and reaching her goal of shedding 50 pounds after giving birth.

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'I'm very happy right now,' she said. 'I can't complain.'

But the 'Keeping Up with the Kardashians' star recalled what it was like to be harshly criticized for her pregnancy weight gain over the past year.

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'It really hurt my soul,' she said. 'It changed how I am in public. I've tried to live more of a private life.'

Kardashian talked more about losing the weight on the Atkins Diet, which she said 'worked' for her in college, so she tried it again.

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'At the beginning I couldn't exercise a whole lot,' she said, 'But then I just started going on hikes with different family members, with my boyfriend, with anyone that would go on hikes with me ... and it worked.'

Kardashian said her now infamous bathing suit selfie -the one that sent the Internet into a frenzy after she posted the sexy shot of her in a high-cut white swimsuit with her rear end on display - was more like a 'middle finger' to the haters.

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'I actually just sent that to my boyfriend - my fiancé,' she said. 'And I was like 'babe can I post this up?' This is my big middle finger to the world, and everyone that called me fat.'

Leno also probed about the lavish proposal Kardashian received from her rapper beau on Oct. 21.

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'He told me to close my eyes,' she said, describing that night, her birthday, as 'magical.'

'I get out. ... I open my eyes and I look up, like, 'Where are we? We're in the middle of a baseball field.''

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'It's so his personality to do something wild like that for my birthday. ... My favorite Lana Del Ray song came on so I thought, 'Oh my god, he got Lana to play for me.' I thought that was my birthday surprise.'

But West, 36, even had her family fooled. The reality star said the entire Kardashian clan thought they were attending her surprise birthday party.

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'The look on their faces. ... They're bawling, they're running out to the field,' she said.

'They really tricked me.'

Kardashian said she wants to have a destination wedding, potentially taking place next summer, but plans to let West 'do whatever' he wants.

And briefly commenting on her family - Kardashian said happiness is the focus for everyone, including her mom Kris Jenner and stepdad Bruce Jenner, who are 'better' separated but remain best friends, and also for Khloe Kardashian, who she says is 'good' amid marital woes with husband Lamar Odom.

cmonde@nydailynews.com

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