Kim Kardashian Posts a Sexy Video on Instagram

"Coming soon," she teased. What does she have in the works?

April 2, 2014 -- Kim Kardashian is up to something!

The 33-year-old reality star, who has been vacationing in Thailand with her family, took to Instagram to post a sexy video of herself in water. With the song "Boss" by Tinashe playing in the background, Kardashian emerges slowly from the water and flips her hair.

"Coming soon," she teased as the caption.

The 10 Most Memorable Quotes from Kim and Kanye's Vogue Cover

A rep for Kardashian did not immediately respond to a request for comment, and it's unclear whether this is a promotional video or a personal one.

But it has been an exciting few weeks for the reality-TV star, who appears on the cover of Vogue magazine with fiancé Kanye West.

"This is such a dream come true!!! Thank you @VogueMagazine for this cover! O M GGGGGG!!! I can't even…" she wrote at the time.