The fourth Sunday of Lent is rather unique; like the third Sunday of Advent ("Gaudete Sunday"), the fourth Sunday of Lent is a break in an otherwise penitential season. The vestments for this day will be rose, as they are on Gaudete Sunday in Advent, and flowers may adorn the Altar. This day is called "Laetare Sunday" (also "Rose Sunday" ), and takes its name from the opening words of the Mass, the Introit's "Laetare, Jerusalem":