This is the 15477th most frequent Russian word.
представительницами
"Representatives" (feminine, plural).
Here, 'представительницами' means 'representatives' in the sense of representatives from certain fields, specifically in the feminine form.
В конференции принимали активное участие представительницами науки и образования.
Representatives of science and education actively participated in the conference.
In this sentence, 'представительницами' refers to female representatives from a design studio involved in an activity.
На выставке работали представительницами известной дизайнерской студии.
Representatives of a well-known design studio worked at the exhibition.
In this example, 'представительницами' specifies female representatives from the music industry with whom collaboration occurred.