My elder sisters always give me helpful advice before big decisions.

My sisters in law surprised me with a homemade quilt for my birthday.

When the magazine wanted a tearjerker for the Sunday issue, they asked their favorite sob sister to write it.

My kid sisters wanted to learn how to bake cookies, so we spent the afternoon in the kitchen.

My kid sister learned to ride a bike yesterday and couldn't stop smiling.

When we met at the reunion, I knew she was my soul sister.

Our university recently hosted delegations from three sister cities to strengthen cultural exchange.

Mars is often considered Earth's sister planet because they share similar size, composition, and geological features.

My co-sister and I organized a workshop to teach traditional weaving techniques to younger apprentices.

In the old stories, the weak sisters often outwitted their stronger rivals through cunning.