Sistar 

South Korean girl group comprised of four members:

Kim Hyorin
Yoon Bora
Dasom
So You

Hey have you heard Sistar's new album?

Yeah I love their new song "I Like That"!

Sistar by Based Sistar October 7, 2016

Sistar 

Very good female friend that you have known for years. In the context of the COVID-19 and the regulations against the gathering of people from different families, it means that the person in question (the sistar) can be considered in the same family as you are. Thus, it bypasses the COVID-19 regulations and enables face-to-face meetings between all the brothar and sistar that know each other.

Police : Gathering of people from different families is presently not allowed during COVID-19, please distance yourselves
Me : I understand, but she isn't anyone, she is my sistar which allows us to meet-up despite the current crisis
Police : I see, my mistake, please proceed

Sistar by God Soul June 7, 2020

sistar 

A wonderful tiny creature that was created by the same vagina as you and is also your best friend

She isn't my sister. She's my sistar.

sistar by BigSistar January 17, 2014

SiStar hood

A mystical group of woman that respect theirselves and all othe woman. ALWAYS uplifting and never a bad vibe towards other woman. In the presence of true SiStars you only feel the love. They shair thier wisdom their love and their energy freely. You always walk away feeling added to never taken from.

When my daddy passed away the SiStar hood came together to support my being. SIstars Linda and Ginger dedicated a Star in his name . Now no matter how far apart we are on this planet we are forever connected. They showed me my true North Star. Im blesses to be apart of the SiStar hood.

SiStar hood by Im 5280 Tiny July 3, 2021

Plump Sister 

A woman who has put on a few pounds since the last time that a random 72 year old Uncle will say to Larry, the cousin twice removed, this kind of thing:

Uncle: "Golly! That's Suzanne? She has gotten to be a real Plump Sister since the last time I saw her."
Larry: "Must've been back in the Seventies. Before the kid. Kids. Who knows."

Uncle: "It was May 1979. When they got married...wow she just blimped out!" Larry: "Total butterball. Plump Sister, shame."

Plump Sister by MissPriss9 January 12, 2019

Sister X 

The sister with the most not-relative-siblings in Vietnam.

- Do you know sister X?
- Of course, she's the one with the most siblings in Vietnam.

Sister X by Bé Iu Của Chị X April 23, 2021

Big Sisters & Big Brothers 

Organizations that pair young kids with older "brothers" & "sisters". They spend quality time together & it makes up for not having a Mom or Dad. Great for youngsters!

{Big Sisters & Big Brothers] are in practically every town & city nationwide.

Big Sisters & Big Brothers by Starchylde May 21, 2016