Silly Sisters - album - was created in 1976.
Scissor Sisters - album - was created in 2003.
Three Sisters - album - was created in 2004.
Sisters - The Bluebells album - was created in 1984.
Sisters - Idoling album - was created on 2011-03-16.
The Secret Sisters - album - was created on 2010-10-12.
Meet The Simon Sisters - album - was created in 1964.
Break Out - Pointer Sisters album - was created in 1984.
Contact - Pointer Sisters album - was created in 1985-07.
The answer to your question is that sisters, sisters and sisters are all the same word and it is a silly question.
Lucretia My Reflection was created in 1987.
Get Silly was created in 2007-08.
Sam said, "Seven sisters spit spontaneously"