"Plus grandir" is a 1985 song recorded by French singer-songwriter Mylène Farmer and is the first song written by the singer. It was released twice: first, on 25 September 1985 in a studio version as second single from Farmer's debut album Cendres de Lune, then on 12 May 1990 in a live mix version as second single from the live album En Concert. In spite of positive critics and a music video produced as a short film in cinemascope, the song achieved moderate success in France in terms of sales and chart performances.

En concert is the first live album by Mylène Farmer, released on 4 December 1989. It retraces her two first albums, Cendres de lune and Ainsi soit je... and contains a cover, "Je voudrais tant que tu comprennes", originally sung by Marie Laforêt.