I didn't realize there were two Heidi Klums in the same group, so I've made some minor changes to the groups.
The Voices:
tedy1girl - Mariah Carey
Brooke-Lynn -Beyoncé
!Press - RIhanna
Mickey - Celine Dion
Jimmy - Lady GaGa
Rhythm - Christina Aguilera
Evan - Cassie
Jack- Heidi Klum
The Expressions:
^gaby^ - Heidi Klum
sumthintoxic82 - Natalie Portman
ice_creamm - Jessica Alba
Satellites- Tyra Banks
Razzle-Rachel McAdams
Ivancastel - Miley Cyrus
Tinker- Megan Fox
Jake- Rihanna