Born sisters, chose to be best friends.
Sister captions
Sister captions for Instagram for your best friend by birth. Funny, sweet and short sister captions, captions for sisters' photos, and birthday captions for your sister.
My sister, my forever best friend.
Sisters: built-in best friends.
Double trouble.
Big sister, bigger heart.
Little sister, big personality.
Stealing clothes since forever.
Sister squad.
She knows all my secrets and still loves me.
Sisters make the best partners in crime.
Same parents, different vibes.
My sister is my favourite person to fight with.
Happy birthday to my sister, my best friend.
Happy birthday, sis! You're my favourite sibling. Don't tell the others.
Sisterhood is the best hood.
Two peas in a pod.
My sister, my twin in spirit.
Sisters don't let sisters wear bad outfits.
A sister is a friend for life.
She's my other half.
Sibling revelry.
Sister date day.
Sister first, best friend always.
Sisters are the best therapy.