The 30-year-old socialite, who is set to marry fiancé Kris Humphries, turned up in the studio audience for Thursday night's eliminations. Judge Nigel Lythgoe pointed her out in the audience, and a beaming Kim gave a wave to cheering fans.
Contestants Ashley Rich and her partner Chris Koehl were both in tears after being given their marching orders.
But favourites Caitlynn Lawson and Mitchell Kelly made the cut and will compete next week with the remaining 10 contestants.
The budding dance superstars had opened the hour-long spectacle with a stunning Bollywood-style routine.