Which actress played in these movies Princess Diaries 1 and 2 the devil wears Prada hoodwinked?

The actress who played in all three movies you listed is Anne Hathaway.

* Princess Diaries 1 & 2: She plays Mia Thermopolis, the awkward teenager who discovers she's a princess.

* The Devil Wears Prada: She plays Andy Sachs, a young aspiring journalist who lands a job as assistant to a powerful fashion magazine editor.

* Hoodwinked!: She provides the voice for Red Riding Hood.