The change is huge for Isla, 42, who is known for her iconic fiery red hair.
We guess Isla will be able to tell us whether blondes do have more fun!
Iconic red head Isla Fisher has undergone the ultimate hair transformation and dyed her locks blonde!
On New Years Eve, the Australian actress shared a photo of her new 'do with the caption: "Go blonde in ‘19 or go home".
The change is huge for Isla, 42, who is known for her iconic fiery red hair.
We guess Isla will be able to tell us whether blondes do have more fun!