"What Makes You Beautiful" is the debut single by the British-Irish boy band One Direction, released in 2011 as the lead single from their debut album, Up All Night. The song was written by Savan Kotecha and producer Rami Yacoub, with production by Yacoub and Carl Falk. The song is a power pop track with electropop influences, featuring a prominent guitar-based chorus and a catchy "na na na" hook in the middle. Its lyrics revolve around a girl who is attractive but insecure about her looks — she doesn't realize what makes her beautiful, and that's exactly what makes her so appealing. The song celebrates natural beauty and confidence, emphasizing that the girl's lack of awareness about her own beauty is what makes her truly beautiful. The inspiration for the song came when songwriter Savan Kotecha wrote it for his wife after she expressed feeling "ugly" one morning. The chorus melody lingered with him for a year before they developed it into a full song. Musically, the song is upbeat and fun, fitting pop sensibilities aimed at a teenage audience. It was a commercial success, topping UK charts and earning multi-platinum certifications worldwide. The music video features the band spending time on a beach and complements the lively, lighthearted tone of the song. Overall, "What Makes You Beautiful" is recognized as a signature and iconic pop song of the 2010s, known for its energetic melody, memorable chorus, and positive message about self-esteem and beauty.