Kim Kardashian Flaunts Famous Butt in Skintight Workout Wear After Cleavage ...

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Kim Kardashian is committed to keeping her weight down and her butt in shape.

'My butt was big enough to begin with, I don't want it any bigger,' she told E! News earlier this month after dropping around seven pounds that had snuck back up on her after she worked so hard to shed baby weight after welcoming daughter . 'Right before my wedding, I was there. I just got comfortable and started eating whatever I wanted.'

Her workout regimen tends to be well-documented, and here is another piece of evidence-taken earlier Thursday-that Kim is sticking to her plan of attack.

The 33-year-old Keeping Up With the Kardashians star was spotted in one of her signature all-black fitness ensembles consisting of a cleavage-baring tank top and skintight leggings that hugged her famous posterior and showed off her hourglass shape.

PHOTOS: Stars working up a sweat

'Do any of u moms see their bodies just not the same? A different shape? Ughhh my hips & butt are huge now!' Kim lamented on Twitter Aug. 5. 'They were big to begin with! Just need to get down to my weight a few years ago. Not gonna complain anymore. Starting diet TODAY! No carbs. Crazy workouts. Whos with me?'

A woman on a mission, indeed.

We at first thought she looked rather polished for someone who had just come from the gym (you know, like Taylor Swift ), so of course it makes far more sense that she was actually photographed before her workout with her pre-sweat pick-me-up from a Coffee Bean & Tea Leaf.

On Wednesday Kim and hubby Kanye West stole away for date night, Kim taking to social media later to share the specifics of the long beige pencil skirt and plunging white bodysuit (with cutouts!) that she wore to dinner.

'Last nights look- J.W. Anderson skirt, Stella McCartney bodysuit, Tom Ford heels,' she detailed her look.

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Kanye kept it casual in jeans and a red plaid button-down over a white T-shirt.

Tune-in to a special 90-minute Keeping Up With the Kardashians wedding lead-up episode on Sunday, August 31 at 9/8c and tune-in to the big season finale on Monday, September 1 at 9/8c on E! PHOTOS: Kim Kardashian's 34 best looks RELATED VIDEOS: