20 Things Only Sisters Who Are Also Best Friends Understand

By Macy Cate Williams
Getty | Amy Sussman
Getty | Amy Sussman

Having a sister is pretty much the best thing ever — she's a built-in best friend. My little sister Maddy was born when I was 3 years old, so she's basically been around since I can remember. We laugh together, we bicker with each other, and she knows all my secrets. Even when she drives me insane, I know she will always be there for me through the good times and the bad. Maddy is my best friend for life. Here are 20 reasons why any sister is a BFF for eternity.

— Additional reporting by Lauren Harano

01
She'll always give you the best compliments.
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She'll always give you the best compliments.

She looks like you; she has to.

02
She always has your back.
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She always has your back.

She'll defend you to the end, even if you're wrong.

03
You never take her insults to heart.
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You never take her insults to heart.

Because she's your sister, so she clearly doesn't mean it.

04
You can do gross or evil things to her and she will forgive you.
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You can do gross or evil things to her and she will forgive you.

Eventually . . .

05
You grew up listening to the same music.
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You grew up listening to the same music.

And can impromptu harmonize a few lines together no problem.

06
She will listen to every last detail of your problems.
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She will listen to every last detail of your problems.

Because she actually cares. Because you're her sister and stuff.

07
She knows your deepest, darkest secrets.
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She knows your deepest, darkest secrets.

The ones that nobody else knows.

08
You can raid each other's closets.
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You can raid each other's closets.

Double the wardrobe!

09
She will always call you out when you're lying.
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She will always call you out when you're lying.

She knows that guilty face.

10
You both get SO excited for each other when something good happens.
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You both get SO excited for each other when something good happens.

New boyfriend? Job promotion? Let's party!

11
You have built-in entertainment at all times.
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You have built-in entertainment at all times.

She doesn't have a choice.

12
You share so many inside jokes.
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You share so many inside jokes.

Nobody makes you laugh as hard as your sister.

13
You both have to suffer through family events together.
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You both have to suffer through family events together.

Bore snore. At least you can complain together later.

14
She will "like" every single Facebook post and Instagram picture.
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She will "like" every single Facebook post and Instagram picture.

It comes with the job description.

15
She always knows what you're about to say.
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She always knows what you're about to say.

It's like you can read each other's minds.

16
You can obnoxiously flower each other with sisterly love.
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You can obnoxiously flower each other with sisterly love.

She pretends to hate it, but she totally loves it.

17
You can lie at home and shove your faces with food together.
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You can lie at home and shove your faces with food together.

Zero judgment.

18
You guys joke about what the two of you will be like when you grow old.
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You guys joke about what the two of you will be like when you grow old.

If you were funny when you were kids, imagine how funny you'll be when you're wrinkly.

19
She is always there for you when you have a crap day.
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She is always there for you when you have a crap day.

Sometimes she senses it before she even sees you.

20
She's your favorite person to mess with.
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She's your favorite person to mess with.

After all these years, it's really her fault; she should have seen it coming.