TV show: http://en.wikipedia.org/wiki/Jem_(TV_series)
Movie: October 23, 2015 (USA) http://en.wikipedia.org/wiki/Jem_and_the_Holograms_(film)
[yt]https://www.youtube.com/watch?v=mfa9t-TeeVU[/yt]
Jem and the Holograms (2015) Trailer 1

I don't remember the cartoon too much but
Anyway it seems this is getting torn to shreds online. 
Looks like a generic unknown singer forms group with friends finds fame and drama.
Movie: October 23, 2015 (USA) http://en.wikipedia.org/wiki/Jem_and_the_Holograms_(film)
[yt]https://www.youtube.com/watch?v=mfa9t-TeeVU[/yt]
Jem and the Holograms (2015) Trailer 1

I don't remember the cartoon too much but


Looks like a generic unknown singer forms group with friends finds fame and drama.