Celebrity watchers are left pondering whether or not the expanding chest of actress Hilary Duff is au natural, the result of wearing great push up bras or of course – plastic surgery. Before and after pictures on a number of websites show a marked change in the bust size of the 20-year old actress and singer.

Duff has two perfumes with Elizabeth Arden as well as a clothing line, Stuff by Hilary Duff. She is also known for appearing in movies such as The Lizzie McGuire Movie and Cheaper By The Dozen and Cheaper By the Dozen 2. Duff has also made a successful career as a singer and has released a number of albums.