In reply to #TheTruth.

Whitney did not have any collaborations with women until 10 years into her career. Same with Celine or Toni or Madonna. Female collaborations did not become popular until the 2000's. Collaborations in general were not that popular in the 80/90's, especially for artists who were as big as Madonna/Mariah/Whitney/Toni. Why collab when you can easily chart on your own?