The Swedish Royal Court released a new photo of Princess Estelle and Prince Oscar on the occasion of Saint Lucia’s Day. The caption was as the following: "Glad luciamorgon!". The photo was taken by Crown Princess Victoria at Haga Castle. Saint Lucy's Day, also called the Feast of Saint Lucy, is a Christian feast day observed on 13 December. Although St. Lucy's Day is not an official holiday in Sweden, it is a popular occasion in Sweden.