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Cheeky! Kylie Jenner dared to bare on Monday in some bootylicious Instagram pics. The 19-year-old cosmetics queen posed in jeans with strategic rips across the butt.

WATCH: Pregnant Blac Chyna Poses Nude on the Cover of 'Paper' Magazine -- Just Like Kim Kardashian!

This isn't the first time Kylie has shown off her famous backside. She recently traveled to Turks & Caicos to celebrate her 19th birthday with pals while sporting a slew of skimpy bikinis.

And she isn't the only one in the family flaunting her curves. Kylie's future sister-in-law, Blac Chyna, who is also the ex of her boyfriend, Tyga, recently posed for Paper magazine entirely nude.

The glowing maternity photos feature a long-haired, blonde Chyna covering up her breasts with her hands and cradling her baby bump.

MORE: Kim Kardashian Rocks Giant Coat Over Sexy All-White Ensemble for Date Night With Kanye West: Pics!

In a recent Facebook Live Q&A, Chyna and her fiance, Rob Kardashian, said they'd let Kylie babysit their future child.

"She could babysit the baby and King at the same time," Chyna said.