What is Sienna Miller Alfie famous for?

You're likely thinking of the movie "Alfie" (2004) which starred Jude Law, not Sienna Miller.

Sienna Miller is a well-known actress, but she is not famous for "Alfie". She is known for films like:

* Layer Cake (2004)

* Factory Girl (2006)

* American Sniper (2014)

* 21 Bridges (2019)

* The Lost Daughter (2021)

She is also known for her relationship with Jude Law (the star of the film "Alfie") and her public persona.