I don't actually read WW, but I like the new costume. Whilst I have nothing against a woman showing off her body, I've always felt that hero costumes that are basically just a bra and some underpants are a bit impractical for the job. If I were a super hero, I'd want some protective fabric and not to have to worry that my boobs would come out.

Maybe they're retconning because 69 is considered a bit old to be doing super-heroics?