"Fifteen" is a song by American singer-songwriter Taylor Swift, featured on her debut album, released in 2006. The song reflects on the experiences and emotions of being a teenager, particularly focusing on the challenges and lessons learned during high school. It emphasizes the importance of friendship and self-discovery during this formative period. The lyrics convey a sense of nostalgia, as Swift recalls her own experiences at the age of fifteen. The song encourages listeners to embrace their youth while also recognizing the mistakes and growth that come with it. Overall, "Fifteen" serves as a reminder of the bittersweet nature of growing up.