Kylie Lets Kim Drink Her Sister Kourtney's Breast Milk

Controversial: Kim is also seen drinking her sister Kourtney's breast milk

Giggles: Kim couldn't stop laughing after tasting the liquid

Footage of the three sisters and brother Rob messing around in home videos when they were younger was also shown on the programme.
Kourtney and Kim Take New York is the second spin-off from Keeping Up With The Kardashians following Khloe and Kourtney Take Miami last year.
The new Manhattan-based E! reality show will see Kim and Kourtney attempt to open another of their clothing stores Dash, as well as seeing the sights and sounds of the Big Apple.