Yekatarina "Katya" Derevko, played by Isabella Rossellini, was the first of Irina's sisters to be announced.
Irina Borzova | Irina Bokova | Irina Allegrova | Princess Irina Alexandrovna of Russia | Irina Viner | Irina Brook | Irina Solovyova | Irina Saari | Irina Rodnina | Irina Pantaeva | Irina Livezeanu | Irina Kupchenko | Irina Ionesco | Irina Demick | Irina Alfyorova | Irina | Tsarevna Irina Mikhailovna of Russia | Princess Irina Nikolaïevna Orlova | Princess Irina Nikolaievna Orlova | Irina Valyukevich | Irina Shayk | Irina Safarova | Irina Rodina | Irina Ratushinskaya | Irina Privalova | Irina Papkova | Irina Negrea | Irina Muravyova | Irina Lenskiy | Irina Krush |