Happy birthday, sis! You're my favourite sibling. Don't tell the others.

Sisters: stronger together.

Sisters make the best partners in crime.

Sisters make the best memories.

Sibling revelry.

Big sister, bigger heart.

Love my sister more than I'll ever admit to her.

Sisters by blood, friends by heart.

My sister, my mirror, my opposite.

Double trouble.

My sister is my hype girl.

She was my first friend.

Chaos is better with my sister.

Sisterhood is the best hood.

Sister selfie!

My sister, my twin in spirit.