Your Sister's Sister was released on 06/15/2012.
The plural for sister is sisters.
The plural of sister is sisters.
Three Sisters - 2001 Sister Break 1-16 was released on: USA: 8 May 2001
Three Sisters - 2001 The Sister Equinox 2-12 was released on: USA: 15 January 2002
The plural form of sister is sisters.
The plural form for the noun sister is sisters.
If you have one sister, and she possesses something, it's your sister's car. If you have two or more sisters and they all possess something in common, that your sisters' heritage (and yours!). This is not to be confused with the contraction for 'sister is'... my sister's coming over for dinner...
He has a sister & a Half sister.
It is grammatically incorrect to say sister and sister. You just say sisters.
"Sisters" means there are multiple sisters. "Sister's" is the possessive and refers to something that belongs to that sister.For example, you would say, "I am going to the movie with my sisters" if you went to a movie with your two sisters. You would say, "That is my sister's book" if you were referring to a book that belonged to your sister.
Sister's means belonging to her, for example - This is my sister's shirt. And sisters is two or more, here's another example- I have five annoying sisters. So that's the differenve between sister's and sisters.
The word sisters' is plural possessive. The singular is sister, singular possessive is sister's; the plural is sisters, the plural possessive is sisters'.