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

During the campaign, she relied on her sister-in-arms to watch her back during every patrol.

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

The two sister ships sailed in formation during the naval review.

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

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

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

The old sailor warned the young men to avoid the frail sister by the harbor.

I borrowed a few sister clips to finish my hairstyle.

She secured the flag to the halyard with a sister clip to prevent it from slipping.