The purpose of this study is to examine children's performed joy in their everyday peer relations in early childhood education (ECE) settings. The theoretical and methodological frameworks draw on a narrative approach, the postmodern formulations of emotions and Erwin Goffman's dramaturgical perspectives in children's everyday social relations. The research material was gathered by video observations and diary notes in open ECE groups in Finland, with children from 2 to 6 years. The findings imply that children's joyful performances act as a dynamic practice in their peer relations. Joy as a practice both generates the emotion of joy and promotes different relational goals, such as making friends.