Bianca Brandolini d’Adda and Alexia Niedzielski

Bianca Brandolini d’Adda and Alexia Niedzielski (from left) wear pieces from their new collection.

Childhood friends Alexia Niedzielski,the editor in chief of System magazine, and Bianca Brandolini d’Adda, a fashion plate and actress, were both born and raised in Paris and spent holidays at their family homes in Brazil. One hazard of such glamorous globe-trotting lives? “Wewear a lot of Brazilian bikinis but find they’re a bit tiny when we’re in Europe,” Niedzielski says. So the longtime fans of the Rio-based lifestyle brand Osklen contacted its founder, Oskar Metsavaht, and proposed that they design a collection together.Metsavaht, who, in his 25 years in business had never collaborated with anyone, readilyagreed.“They were muses of mine,” he explains. Debuting this month, Osklen Praia A&B combines sophisticated 1950s Côte d’Azur silhouettes with vibrant Copacabana colors and prints.Bandeau tops, high-waist bottoms, rompers, and one-pieces come in palm-frond patterns; fitted tops and filmy palazzo pants in cabana stripes. The line also includes accessories like stretchy belts, pineapple-shape bags, and block-heel sandals. “Everything a beachgoer needs to feel somewhat dressed,” Niedzielski notes. No matter what side of the equator she finds herself on.

Hair by Alex Polillo using Oribe at The Magnet Agency; Makeup by Kindra Mann for Chanel. Special Thanks to Viceroy Santa Monica/ viceroyhotelsandresorts.com. Photography assistant: Peter Juhl.