Other highly anticipated films that are in the works with super-powered female leads include “Gotham City Sirens,” “Batgirl,” “Supergirl,” “Silver and Black” and numerous other potential spinoffs, according to entertainment reports from Polygon and Time.
The article then looks at the 7 top superheroine films. And leading things off...
7. Supergirl
The 1984 adaption of “Supergirl” starred actress Helen Slater as Kara Zor-El, Superman’s powerful Kryptonian cousin, and follows the heroine’s adventure on earth. Despite never getting a sequel, Slater has guest appearances in The CW’s “Supergirl” television series as Eliza Danvers (Kara’s adoptive mother) and has voiced various characters in the DC Comics universe.
Now consider this film was a critical flop. I even remember on Entertainment Tonight Leonard Maltin gave the film a "1" out of 10.
The film grossed $14,296,438 in 1984 dollars. I put that number into the inflation calculator online...and it came up with $35,329,539.22. These days that would be a decent perhaps modest OPENING WEEKEND.