35 Adorable Photos of Celebrity Sisters Being Sisters

Two moods: laughing on a railing...

The sisters that don purple wigs together...

At least have some more protection against getting slimed.

AWWWWWWW.

THEY HAVE THE SAME SMILE.

You know they planned their outfits to fit the "Urban Cowboy" theme down to the belt buckle.

When you do an impromptu fashion shoot with her and it comes out looking like a luxury ad campaign.

The head tilt. You know what I'm talking about.

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The caption says they stole their mom's clothes, which sounds about right.

The head tilt, a variation.

Okay, but what vile concoctions did they actually make one another drink as kids?

Awwww.

You can't even tell where one begins and the other ends.

How you think you look when you're dancing.

Ah, 2005. We miss you.

The funny thing about sisters is you can take a nice photo (like this) one second and the very next be at each others' throats.

Tag yourself. (I'm Cara.)

"Don't even."

Ali's facial expression: totally plotting to borrow Lindsay's Balmain dress.

Using your sister as a prop: brilliant.

"Who, us?"

Sandwiched between her mom and sister.

The one pinched the other. JK, but plausible.

She'll never hesitate to tell you your hair's wonky, that's for sure.

Strong genes.

All sorts of '60s fabulousness.