Originally Posted by Binker
Not quite: it was confirmed with Season 3's Asylum, there was a newspaper with the headline "Themyscirian Queen Address The Vatican".
Technically the Themysciran Queen would be Hippolyta, Diana's mother.
So herolee is correct. WW's existence is only confirmed in Episode 10.15 when Chloe is talking about other heros she met during her time with the Suicide Squad: "I met a billionaire with high-tech toys and a wondrous women who will throw you for a loop."