"Bob Dylan is 65 today, and it's been announced that an Australian actress is to play him in a film.

Cate Blanchett confirmed at the Cannes Film Festival...that she will depict the early Dylan in "I'm Not There", the first Hollywood film that he has authorised on his peripatetic life."

(Source)

In this case, Cate Blanchett birth Chart shows how you can change of appearance only with a transit of Neptune on a Sun in Taurus by square.

Indeed, Neptune is currently transiting Cate's Sun by square and it comes from the Scorpio sign: that's one of the main reasons why she might be wondering whom she is in real life. The loss of conscioussness (symbol of taurus sign) in the depths of Scorpio Sign is responsible for the psychic and physical changes which is living Cate Blanchett right now not only in her professional life but also in her personal life.