Kourtney Kardashian Reveals Her Gray Hair on Sisters Date with Kim and Khloe

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It's safe to say Kourtney Kardashian hasn't had the most relaxing month, and it appears the stress might be catching up with her.

Following her recent split from her longtime boyfriend, Scott Disick, after nine years together, the 36-year-old mother-of-three was spotted out and about in Los Angeles on Tuesday with some noticeably gray hair standing out from her jet black tresses.

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WATCH: Kris Jenner Says Kourtney Kardashian Is 'Hanging in There' After Scott Disick Split

Kourtney has been sticking to her sisters Kim Kardashian and Khloe Kardashian since the split, and the three of them were snapped at Hugo's restaurant in Los Angeles on Tuesday, filming for Keeping Up With the Kardashians. While Kourtney went casual in a muscle tank featuring the band The Police and ripped jeans, Kim was edgy as usual in a floor-length grey ensemble, while Khloe showed off her newly slimmed-down bod in super-short shorts and a skin-tight black top.

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Aside from leaning on her siblings, Kourtney has been going hard at the gym with Khloe, recently sharing this snap of the two working out.

"We almost threw up," she wrote.

Meanwhile, Scott showed his face for the first time on Tuesday since news of the split broke, promoting Fit Tea on Instagram.

"Gotta be fresh to stay on the grind," he wrote.

The 32-year-old reality star has stayed mum on the split, which happened after he was pictured getting touchy-feely with his ex, celebrity stylist Chloe Bartoli, in Monte Carlo earlier this month. He did, however, wish his 3-year-old daughter, Penelope, a somber happy birthday last week through Instagram. Penelope spent the day at Disneyland with Kourtney, Kim, and her cousin, 2-year-old North West.

"1 of the only things I'm proud off about myself," he wrote. "Happybdayp."

WATCH: Scott Disick's Ex, Chloe Bartoli, Gets Attacked on Social Media

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