As sisters go, few are as close and supportive as Kylie andKendall Jenner.

The two champion each other’s endeavors and never seem to compete with each other.

But I’m sensing a little sibling rivalry when it comes to their hair lately.

Kendall Jenner posing in front of a white curtain

Getty Images

And now, Kendall’s hair has taken a totally unexpected turn.

The model posted a carousel to Instagram with the simple caption blonded.

But that casualness really undersells what a huge change this is.

Her normally dark brown hair is now a warm, classic, golden blonde with shadow roots.

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Fans are, of course, freaking out.

Ahhh looks so good on you , one commenter wrote, while another wrote, omg omg SHEs BLONDEEE.

Even friends and family are weighing in, with Kim Kardashian writing, You did it!!!

and Hailey Bieber commenting, exactly.

Now watch Saweetie discuss the latest beauty trends.