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Kendall Jenner is looking good -- as always!

On Monday, the 18-year-old reality star flaunted her fit form while on vacay with her family in Thailand.

While sunbathing on their private yacht, the Keeping Up With the Kardashians star posted a pic of herself in a string bikini and wrote, "knocked out in the fiercest way."

Umm ... yeah you are!

The starlet was joined by the rest of the Kardashian/Jenner clan sans Rob and Kanye for a trip to Asia, which started in South Korea and is now currently in Thailand.

This certainly isn't the only bikini pic of the Kardashian/Jenner klan. The gals have been posting up a storm during their visit to Southeast Asia. But of course!