Mexican (Mexico) celebration of a girl's 15th birthday, marking her passage from childhood to adulthood. The traditional quinceañera is both a religious and a social event that emphasizes the importance of the family and society in the life of young people. The celebration begins with a mass attended by the girl and her family and godparents. This is followed by a reception, or party, to which friends and relatives are invited. The reception features food, music, and dancing, with the girl accompanied by her “court” of damas (“maids of honour”) and chambelánes (“chamberlains”). Symbolic actions may include the presentation of a doll to a younger sister, to show that the celebrant is giving up her childhood, and the placement of heeled shoes on her feet, to indicate that she is ready for adulthood. The celebration is generally as elaborate as the means of the family will allow. Although the quinceañera observance originally signified that the girl was prepared for marriage, the modern celebration is more likely to signal the beginning of formal dating. Some girls choose a trip abroad rather than a party, and others now choose not to celebrate their 15th birthday in the traditional manner.

The Aztec and Maya also had such rite-of-passage customs, and it is thought that the quinceañera may have originated in the Spanish interactions with the indigenous peoples of the area. The celebration is popular in some areas outside Mexico, particularly in parts of the United States with large Mexican American populations.