Five women with red and black halter tops and red and black miniskirts wearing red and white shoes.
Five sisters wearing red and black attire are getting ready to take a family portrait.
Red and black attire does not specifically refer to  halter tops .
Women wearing matching attire don't have to be sisters. Just because women wear matching attire doesn't mean they are getting ready to take a family portrait.
Matching outfits does not mean women are siblings, nor that they are getting ready to take a family portrait.