"What Makes You Beautiful" is a song by the British-Irish boy band One Direction. The lyrics describe a girl who is insecure and doesnt realize how beautiful she is. The song encourages her to embrace her natural beauty and not to worry about trying to impress others with makeup or other superficial things. The chorus repeats the line "You dont know youre beautiful, thats what makes you beautiful". The song also talks about how the girls smile and hair flip are attractive to the singer, and how he wishes she could see herself the way he sees her. The song was released in 2011 as One Directions debut single and was written by Savan Kotecha.