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Who? Naomi Watts.
What? Turning heads in every direction in a petrol-blue gown featuring a sexy split at the front. It's hard to believe this woman is 40 when she looks more like 30.
Where? The 2013 Palm Springs Film Festival, California, 5 January.
Verdict? We're really feelin' blue - in a good way.
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Celebrity hair inspiration: Blondes
Sienna Miller
Sienna Miller's red lips, sun-kissed skin and healthy-looking golden-blonde hair are all as stand-out as each other. Jealous? No!
Celebrity hair inspiration: Blondes
Cameron Diaz
She's one sexy blonde - and Cameron Diaz works the bedhead look to perfection. Love the white-blonde hue teamed with just the right amount of bronze, and those popping hot-pink lips.
Celebrity hair inspiration: Blondes
Carey Mulligan
Texturised, young and funky, Carey Mulligan's look perfectly suits her individual character, and the caramel and honey tones kept the look even more fresh.
Celebrity hair inspiration: Blondes
Christina Aguilera
Now for something a little, well, different! Christina Aguilera mixes her platinum-blonde Heidi plait with a little splash of baby-pink. What do we think? The jury's out on this one...
Celebrity hair inspiration: Blondes
Emma Stone
Emma Stone ditched her auburn red locks and went back to her golden roots for her role in the new Spiderman film.
Celebrity hair inspiration: Blondes
Gwen Stefani
Beauty-wise, there are two things that spring to mind when you think of Gwen Stefani: her bright red lips and that gorgeous white-blonde hair. She knows how to rock both to perfection.
Celebrity hair inspiration: Blondes
Kate Moss
Oh, how we're lusting after the perfectly-swept, Bardot-esque fringe that Kate Moss is famous for. Bronzed cheeks and her trademark cat's eyes complement the just-got-out-of-bed styling.
Celebrity hair inspiration: Blondes
Lady Gaga
Lady Gaga sports Rupunzel-length hair for shopping trip in Japan.
Celebrity hair inspiration: Blondes
Reese Witherspoon
Megawatt grin, megawatt blue eyes, and megawatt ash-blonde hair - Reese Witherspoon is all about the glamour factor.
Celebrity hair inspiration: Blondes
Scarlett Johansson
We just love this seriously sexy, feminine look on Scarlett Johansson. She makes a nod to the two-tone trend with her ash-blonde locks turning a little more honey-hued towards the bottom.
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