Sister Katie

An annoying hawt BFF girl names Katie who likes being addressed like a nun.

Girl 1: Hey look it’s sister Katie

Girl 2: Omg I knew a sister Barbra back in the 30s.
Girl 1: yea she’s weird and stupid and annoying but gorgeous.

Girl 2: I wish we could all be like sister Katie. Also have you seen her bestie?
Girl 1: Omg!! Who I thought she was lonely and had no friends. Because she acts like a nun.

Girl 2: Her name is Sister Audrey.

Girl 1: Omg I thought Sister Audrey was only a legend, but she is real and hawt.

by Sister69 July 16, 2021

Stepish Sister

The daughter of your dad's (or mom's) significant other.

When I visit my dad I stay in my stepish sister's room.

by Cowboy Pete August 22, 2010

Nitzan's sister

A very hot girl, Wich we can't stop speaking about. Sadly, we never saw her in person, but we all know she exists.

What about nitzan's sister?
She's fit!

by Wtfactory November 14, 2020

Sister-in-law

The woman who doesn’t come to your wedding because she has more important things to do, yet expects you to pay for half of her wedding and will upend the entire family unless she gets her way. She is usually supported by your mother-in-law who somehow always takes her side in every possible argument.

Your sister-in-law thinks she’s entitled to you paying for half her wedding yet she has the audacity to not even come to your wedding.

by Xxxxxxxxfanboyxxxxxxxxxx November 13, 2020

Stake Sisters

Similar to "soul sisters", stake sisters share a deep, unexplainable connection, often about strange, obscure eccentric, or dark subjects, leading them to think their ancestors may have been victims of the witch hunts in Early Modern Europe and Colonial America. Connection to any formal or informal version of witchcraft is not required, simply the type of person whose interests may lie in the spirituality of the natural world or have taken them on a different course than the mainstream.

Stevie: Did you know that cave people in ancient England used to use skulls as--

Esme: Teacups? YES. I saw that on--

Stevie: That mortician's YouTube channel?

Esme: How did you know?

Stevie: We must be stake sisters.

by stakesister August 22, 2022

Sister gay

When you and your freinds are so close you guys can do just about anything together

chillconnectedcloseromantic

"Jimothy, me and my freinds can do so much together! We're sister gay!"

by Sassygaychola August 25, 2019

elevator sister

A sister or sibling that is your dads but not your moms.

hey have you met my elevator sister

by gaye/marshmallow_king February 14, 2017