Conversation so far:
What is girl power according to the Spice Girls?
The phrase was a label for the particular facet of post classical neo-feminist empowerment embraced by the band.
What other meaning did the phrase girl power have for the Spice Girls?
The phrase means that a sensual, feminine appearance and equality between the sexes need not be mutually exclusive.
When did the saying girl power become popular?
What happened after the phrase girl power became popular with the Spice Girls?
In a Christmas 1996 interview with The Spectator magazine, Halliwell spoke of former UK Prime Minister Margaret Thatcher as being an inspiration for the group.

Question: Which of their songs showed girl power?
Self-contained rewrite: Which of the Spice Girls showed girl power?