Barbara Palvin collaborated with the Italian fashion brand Calzedonia for their Summer 2019 swimwear campaign.

She served as the face of their swimwear collection, showcasing various swimsuits and beachwear pieces for that season.

Barbara Palvin likely appeared in promotional materials such as photoshoots, advertisements, and possibly video content, modeling Calzedonia's swimwear line for the Summer 2019 collection.

Her involvement would have included posing in different styles of bikinis, one-pieces, cover-ups, and other beach attire, emphasizing the brand's offerings and Palvin's appeal as a model.

These collaborations are common in the fashion industry, where well-known models like Barbara Palvin are chosen to represent and promote collections for various brands.

For more specific information or to view the Calzedonia Summer 2019 swimwear campaign featuring.

Barbara Palvin, you might want to explore Calzedonia's official website, social media channels, or fashion magazines where these campaigns and photoshoots are typically showcased.