Oksana Lada (Oксана Лада; Born March 3, 1976) is a Soviet born actress, probably best known for the role of Irina Peltsin, the mistress of Tony Soprano on the hit HBO TV show The Sopranos. She also had a role as a wedding dress saleswoman in 30 Rock, Season 2, Episode 1, `Seinfeldvision.` ...