Another day, another shot of Justin Bieber showing off his hard-earned abs.
Justin and Kendall Jenner -- the new faces of Calvin Klein Underwear, and Calvin Klein Jeans, respectively -- attended a Calvin Klein Jeans music event in Hong Kong on Thursday, where the "Baby" singer especially wasn't shy about putting the goods on display.
Check out the 21-year-old superstar giving everyone an eyeful, purposefully lifting up his shirt on the red carpet.
Not to be outdone, Kendall also put her trim waist on display -- though more subtly -- rocking a simple grey shirt she tied up, with a sassy leather skirt.
However, the 19-year-old supermodel was definitely not as subtle about repping her Calvin Klein undies on Instagram on Thursday, when she gave her followers a super close-up look at her slim stomach.
"Hong Kong with @calvinklein #MyCalvins," Kendall wrote.
Whether you love or hate the pair, whom Vogue calls "the new Brat Pack," you gotta admit Justin and Kendall's amazing abs are pretty enviable! Check out a shirtless Justin and a bikini-clad Kendall steaming up the pages of Vogue in the video below.