Kate and Oliver are joined by Sara and Erin Foster on this week’s episode of “Sibling Revelry.” They open up about their childhood and multiple step-siblings, and share how they ended up working together, despite not getting along when they were younger. Sara and Oliver look back at their non-date, and Erin explains why she escaped to boarding school in Switzerland. Executive Producers: Kate Hudson, Oliver Hudson, and Sim SarnaProduced by Allison BresnickEditor: Josh WindischMusic by Mark HudsonThis show is brought to you by Cloud10 and powered by Simplecast.This episode is sponsored by Away.