Conversation so far:
how did spice girls' girl power become popular?
The phrase itself had also appeared in a few songs by British girl groups and bands since at least 1987.
Was there any songs related to girl power?
notably, it was the name of British pop duo Shampoo's 1996 single and album, later credited by Halliwell as the inspiration for the Spice Girls' mantra.
what other celebrities used that term?
At the 43rd People's Choice Awards in January 2017, American actress Blake Lively dedicated her "Favorite Dramatic Movie Actress" award to "girl power.
did spice girls "girl power" empowered girls-women?
Some commentators credit the Spice Girls with reinvigorating mainstream feminism--popularized as "girl power"--in the 1990s.
did that continue in the 2000's and beyond?
The Spice Girls' debut single "Wannabe" has been hailed as an "iconic girl power anthem".
In 2016.

Question: was it always positive or were there mixed feelings?
Self-contained rewrite: was the single Wannabe positive or were there mixed feelings?