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"!
by Based Sistar October 7, 2016
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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
by God Soul June 8, 2020
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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.
by BigSistar January 17, 2014
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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.
by Im 5280 Tiny July 3, 2021
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