Board Thread:Questions and Answers/@comment-24520051-20161120235846/@comment-918732-20161202135050

No, I thinks it's that the Wonder Girl who appeared in the first Teen Titans story (in The Brave & the Bold #60) was a new character. The Wonder Girl who had appeared previously in Wonder Woman comics was just Wonder Woman as a girl.

(Fuzzy Slippers is right if you are counting B&B #54 as the first appearance of the Titans, but I do not.)