Blake Lively undergoes her biggest transformation yet for a film role

Hollywood's golden girl is barely recognisable!

These celebrities are totally unrecognisable as they’re spotted on set completely committing to their roles and undergoing a total transformation!
From Cate Blanchett to Nicole Kidman - these stars prove that their art always trumps vanity.
Last year Brad well and truly put his sexiest man alive title behind him as he underwent a total transformation for the drama The Big Short.
Meanwhile actress Katie Holmes has morphed into Jackie Kennedy Onassis as she films scenes for the upcoming mini-series, The Kennedys After Camelot.
Of course, she's not the first star to undergo a dramatic overhaul for a role. Click through the gallery to see all the other stars who’ve transformed!

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