First look at Renee Zellweger as Judy Garland in upcoming biopic

Renee Zellweger looked virtually unrecognisable as she transformed into Judy Garland for the biopic Judy, based on the Hollywood icon's incredible life.

The American actress, 48, was snapped in a well-coiffed brown wig with a large bouffant characteristic of Garland's image as she filmed scenes in London on Thursday.

The film will centre around Garland’s final concerts in London, nearly 30 years after she became a household name as Dorothy in the Wizard of Oz.

It will particularly focus on her romance with musician Mickey Deans (played by actor Finn Wittrock), who Garland married several months before her death in June 1969 aged 47.