I've decided to do my own version of C.H.Y.K.N.'s New Power and Power Girl transformations. As for their pink magical weapons, I've already decided what they're going to be, but decided to save them for another time.
Here's Cassidy's three transformations. Remember, the Power Girl transformation has two different wing sets: the more solid one from the official art on the dolls' boxes, and the bigger ethereal version on the dolls themselves.
Cassidy's Transformation Concept Art