Keeping Up With The Kardashians: Kendall Jenner Tells Kylie, 'All You Do Is Act Like A Brat!'

Kylie and Kendall Jenner spar in this brand new preview of Keeping Up With the Kardashians we've got here for you on RadarOnline.com.

"All you do," Kendall tells her younger sister, "is act like a brat!"

The bickering between the young fashionistas maybe have worn thin on their dad Bruce Jenner, who jokes, "I think this is a two-beer night," in the preview.

Watch the video on RadarOnline.com

Find out what cause the teen tussle when Keeping Up with the Kardashians airs Sundays at on E! on 9/8c.