Renée Zellweger: My Style Timeline

The usually perky blonde, who had recently went brunette for her role in Cinderella Man had fans gasping when she decided to try for a hair color trifecta, and dyed her locks red to attend the Mr. Abbott Awards at Chelsea Piers.

Two days before filing for an annulment from husband of four months, Kenny Chesney, Zellweger returned to her comfort zone – her blonde roots – for a visit to Japan to promote Cinderella Man.

Shaking off a rocky year, the actress puts on a smile and goes for casual elegance at the New York premiere of Miss Potter with pulled back loose curls and a black cocktail dress.

Keeping her makeup minimal, Zellweger shows off a new pixie-ish bob and bare shoulders at the 2007 Crystal Lucy awards, which honored the actress for her contribution to film.

Zellweger debuts a new short hairdo at the N.Y.C. premiere of Bee Movie. Her light locks compliment her feathery Carolina Herrera cocktail dress.