Hot Mama! Kourtney Kardashian Wears Super Sexy See-Through Bra Top on Night Out With Kendall Jenner

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Kourtney Kardashian just can't stop showing off her amazing body.

The 36-year-old mother-of-three flaunted her super slim physique at Hollywood hot spot The Nice Guy on Monday night, wearing a head-turning see-through bra top. Kourtney paired the racy attire with black trousers and a classic blazer, completing her all-black look with a choker and simple heels.


WATCH: 6 Times Kourtney Kardashian and Her Sick Bod Totally Killed It Since Splitting With Scott Disick

Kourtney was with her younger sister, 20-year-old Kendall Jenner, who also stunned on the sisters' night out. The model showed off her super tiny waist in a cropped sweatshirt and black trousers, sporting snakeskin-print heels.

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A source tells ET the girls’ night out was actually for Cody Simpson’s 19th birthday. “They were there for a little over an hour,” the source says, noting everyone seemed “pretty relaxed.” “Kourtney had some cocktails, while the other girls did not. They did order a few lite bites though.”

Kourtney's certainly been on a roll lately with her super stylish looks, including this silver strapless Julien Macdonald dress she wore to the InStyle and Warner Bros. Golden Globes after-party on Sunday night. Her date to the big bash was her younger sister, 18-year-old Kylie Jenner, who went for a more dramatic look in a sparkly La Bourjoisie crop top and matching skirt.

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And check out Kourtney's flawless skin that night.

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Hot date with @kyliejenner tonight. ❤️

A post shared by Kourtney Kardashian (@kourtneykardash) on

The Keeping Up With the Kardashians star is "the happiest she's been in a really long time," a Kardashian source told ET earlier this month, and if we're judging by her recent fierce appearances, it's showing.

"Kourtney is 100 percent over Scott [Disick]," the source revealed. "Not in a hateful way at all, but she has completely moved on."

"This breakup has really showed her that she needs to focus on herself," the source added. "She's spending a lot of time with her girlfriends, is planning dinners and nights out. She's happy and glowing."

WATCH: Kourtney Kardashian Shows 'Life-Changing' Way to Eat a Kit Kat Bar That Truly Baffles the Mind

According to the source, Kourtney is also dating again after splitting from Scott last July, whom she was in a relationship with for nine years.

"No one special, but she is putting herself out there and is open to set-ups," the source said. "She's not pushing it though."

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