Maybe that's just me...but I've always looked for this IB character's TF:
Her name is Looker, it was a nerdy bank assistant until she was induced to awaken her meta-human abilites, which improved her looks.
http://readcomiconline.to/Comic/Batm...ue-30?id=32869
http://readcomiconline.to/Comic/Batm...-31?id=32872#4
It is sadly a poof process, but still it is a character that doesn't get too much attention, I thought about sharing it.