Justin Bieber Flashes Abs After Hiking Excursion in Hollywood Hills

He's got it, he flaunts it.

Justin Bieber hit up a Los Angeles hiking trail over Labor Day weekend, taking the opportunity to strip down and flaunt his chiseled abs.

The "Sorry" singer was clearly feeling the heat of the California sun during the hike in the Hollywood Hills. He peeled off his shirt to rep his Calvin Klein undies and rock his six-pack au naturel.

WATCH: Justin Bieber Takes Sofia Richie to Mexico Following Her 18th Birthday

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While rumored girlfriend, Sofia Richie, wasn't with Bieber this time, she wasn't far away. The 18-year-old model posted an Instagram snapshot also from an LA-area hiking trail on Saturday. 

Bieber whisked Richie away to Mexico late last month to celebrate her 18th birthday. While the singer recently shut down his own Instagram account, Richie happily chronicled the getaway on her social media channels. 

NEWS: Justin Bieber Goes for a Shirtless Jog While Sofia Richie Spends Quality Time With Her Family

Maybe the 22-year-old ran his tab a little high on the Mexico trip, because a few days later his credit card was declined at Subway. Luckily, a Belieber was around to foot the bill for the foot-long! Find out more in this video.