Which one would they be?

Sakura - Katy Perry ( i know most would say Tsunade b/c of the boobs but personality wise i think she's more sakura)
Ino - Taylor Swift
Temari - Lady Gaga
Hinata - Sia

Lady Gaga would be Kakashi.

Katy is Kaguya.

i dont see how Gaga could relate to Temari tbh.

Cher is Tsunade because both are icons/hide their age.

Rihanna = Anko (but Rih wouldn't get fat when she gets old)

Katy Perry = Kurenai Yuuhi

Madonna = Tsunade

Lady GaGa = Chiyo

Mariah Carey = Mei Terumi

Sia = Sasori

Taylor Swift = Temari (I love Temari tho)

Miley Cyrus = Akamaru

P!nk = Gaara

Blasphemy!

Adele- Choji

Madonna - Tsunade (Age)
Lady Gaga - Sakura
Katy Perry - Ino
Sia - Kakashi (face)
Miley Cryus - Orochimaru (tongue)
Britney Spears - 4th Hokage
Beyoncé - 4th Raikage
Taylor Swift - Hinata
Jay-Z - Killer B

Gaga would be the multi-talented Pain.

Katy would be Deidara.

This

Madonna- Kaguya or Madara
Katy- Naruto
Taylor- Sasuke
Beyonce- Tsunade
Gaga- Obito
Mariah- Hiruzen

based on my limited knowledge

naruto - selena and sasuke demi (lost bff)
hokage - brit maybe