The album was released only in France, distributed by Nocturne. While numerous CD collections of Amanda Lear music had been released before, Forever Glam! is notable for being the first compilation to be officially approved of and promoted by the singer herself.
Nearly all tracks are arranged chronologically, representing every stage of Lear's musical career. Besides most of her best known songs from the 1970s, combined with selected tracks from the 1980s, 1990s and 2000s, Forever Glam! includes two new recordings, which had both been released as singles; "Martini Disease", a duet with Italian indie band Jetlag on which Lear recites Charles Baudelaire, and her English-French language take on Barry Manilow's 1978 hit "Copacabana". The compilation also contains three tracks that have never been available on CD before; the evergreens "As Time Goes By" and "Bye Bye Baby", recorded for the 1985 EP A L, as well as the rare 1984 single "Assassino". Included is also Lear's recording of Giorgio Moroder's "From Here to Eternity", remixed by DJ Eric D. Clark, previously not available on any of her solo albums.
The photographs used on the cover were taken by Denis Taranto, and date back to 1979 when one of the images from the session was used on the cover of the single "Fabulous (Lover, Love Me)".