Well, that happened in DC Comics, for a few special issues of Wonder Woman (inspired by the TV Show, Wonder Woman, DC was looking to cover adventures of Wonder Woman during World War II, so they came up with an interesting idea....)
Wonder Woman #228
Wonder Woman #243
More Wonder Women FactsFlash of Two Worlds in Flash #123 of September, 1961, with Barry Allen and Jay Garrick). The two Wonder Woman didn't even look different in these team-ups, but did in their first meeting (a large meeting of the JLA and JSA to free the Seven Soldiers of Victory from traps in the past, with the Golden Age Wonder Woman spotting a classic look, and the JLA's Wonder Woman in her white pantsuit "mod" look as Diana Prince for Justice League of America #100 to #102 in 1972).
Fury), met the Silver Age Wonder Woman (who had improved her breastplate from an eagle symbol to the stylized double "W"), as Earth-1's Diana was looking to make some changes in her life.
Well, there was a whole Encyclopedia based on her history out a few years ago, and you can read my interview with one of its authors, John Wells, with Part 1 here and Part 2 here!
Great Hera, there's good reading in the Essential Wonder Woman Encyclopedia!