Kim Kardashian sweats her way through intense workout in skin-tight exercise gear -- see the pics!

Kim Kardashian is kicking her fitness regimen up a notch, with some pretty epic results.

The reality star showed off her intense workout routine while running up and down the steps of a stadium in Los Angeles on Saturday morning.

The 36-year-old mother of two rocked a tiny black sports bra and skin-tight pair of black lyrca exercise pants while breaking a sweat with her personal trainer.

She was seen doing pull-ups and squats as well as running up and down some steps at near-by bleachers. Kim was working out for more than an hour and a half in the Lon Angeles heat before heading back to her car with her bodyguard. PICTURES BY SPLASH NEWS

WATCH: Kim Kardashian Flaunts 60-Pound Weight Loss in Skin-Tight Minidress

Her new, grueling routine has clearly had a been paying off. Kardashian looked fitter than she has in years as she pounded the cement steps in the morning sun.

The Keeping Up With the Kardashians star recently appeared on The View, where she dished on some unflattering photos taken of her during a vacation to Mexico in April. Kardashian claimed that the pics were digitally manipulated to make her appear out of shape.

"I saw these awful photos of myself when I was on a trip in Mexico and people were photoshopping them and sharpening them," Kardashian said.

See more of Kim Kardashian's sexiest looks this year:

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WATCH: Kim Kardashian Stuns in Dazzling, Tight-Fitting Dress After Leaving 'WWHL'

"I definitely was not in my best shape. I hadn't worked out in about 12 weeks. I'd had two surgeries on my uterus," she continued. "I was already not feeling like myself, And when people were like, sharpening them and making them look way worse and then those were going around, I was like 'OK, I'm going to get it together.'"

The star has certainly gotten it together. Aside from her intensive leg work, Kim was also spotted working out her arms doing chin-ups on a set of metal monkey bars.

While Kardashian has been working on getting fit, she and husband Kanye West have also decided to expand their family once again. A source recently told ET that the couple have hired a surrogate to carry their third child.

WATCH: Kim Kardashian's New Makeup Line Rakes in Millions Minutes After Release

"It's something that has been in the works for a bit now," the source said of the surrogacy decision. "There was always a very high risk if Kim became pregnant with a third baby, so it was never really an option. They are excited to finally add to their family."

With a surrogate, the reality star won't have to struggle with the same difficulties she's faced during her previous two pregnancies, and won't have to worry about losing the baby weight. Check out the video below to hear more.

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