7. Geri Halliwell of The Spice Girls
Geri Halliwel, also known as Ginger Spice, abruptly left the top-selling girl group in 1998.
“I just felt like the band had got so big, and the girls were almost like they didn’t need me anymore,” she told Marie Claire. “I definitely felt very redundant, like the wheels were turning whether I was there or not.”