Rob Kardashian Mocks His Sisters By Going Platinum Blonde!

We love this playful side of Rob Kardashian!
On Tuesday, the Rob & Chyna star took to Instagram to poke fun at his famous sisters' ever-changing looks -- namely, when each one of them gave platinum blonde hair a try.
Needless to say, blondes might have more fun... but not everyone can rock it! Looking at you, Kourtney Kardashian!
Related: The Game Reveals WHICH Three Kardashians He F*ckedThe 29-year-old posted a Photoshopped image of himself next to Kourt, Kim Kardashian West, Kendall Jenner