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/ Source: TODAY
By Lindsay Lowe

Hello there, blond hair!

Rose Byrne just underwent a major hair transformation, stepping out with a stunning, new platinum ‘do. The Australian actress showed off her new look Thursday at the opening night of Broadway's “The Lifespan of a Fact” at Studio 54 in New York City.

Image: "The Lifespan Of A Fact" Opening Night
Byrne is trying out life as a blonde! Dominik Bindl / Getty Images

The 39-year-old walked hand-in-hand with her longtime love, Bobby Cannavale, who stars in the play alongside Daniel Radcliffe and Cherry Jones.

Image: "The Lifespan Of A Fact" Opening Night After Party
Byrne and longtime love Bobby Cannavale at the premiere of Broadway's "The Lifespan of a Fact," in which Cannavale stars. Dominik Bindl / Getty Images

Byrne paired her new 'do with a metallic, belted dress and gold clutch. Her shimmering outfit certainly made a statement, but it was her icy-blond hairstyle that stole the show. She even kept an edgy touch by leaving her dark roots exposed.

Rose Byrne is a blonde now
So chic! Getty Images

Byrne is hardly the first star to try out life as a blonde, but her transformation is particularly dramatic since she rarely strays from the light brown shade she has rocked since her “Bridesmaids” days.

Rose Byrne is a blonde now
Byrne had light brown hair in "Bridesmaids."Universal Pictures

See her past looks:

Back in the day, Byrne had deep dark hair, seen here at the 2004 premiere of “Troy” in New York.

Rose Byrne is a blonde now
Byrne once had dark brown, almost black, strands. WireImage

But she later transitioned to her signature, honey brown shade. The actress rocked a wavy, long lob at the Emmy Awards in 2013.

Rose Byrne is a blonde now
Byrne sported a wavy lob at the 2013 Emmys. Getty Images

Byrne then went for a sleek, ombre style, seen below with another stunning metallic dress at the 2016 Met Gala in New York City.

Rose Byrne is a blonde nowls
Byrne debuted a sleek hairstyle at the 2016 Met Gala. WireImage

She transitioned to a reddish-brown shade, teasing her strands for a fun, retro-inspired bob at the 2017 Met Gala.

Rose Byrne is a blonde now
Byrne played with fun curls at the 2017 Met Gala. Getty Image

Byrne’s platinum strands are a major departure from her go-to color — but only prove she can pull off any shade!