Bye bye blonde!

While everyone else in Hollywood is trading their long locks for short pixie cuts, Molly Sims went in a totally different direction.

She changed her hair by going red!

The usually fair-haired supermodel looked red hot at Sports Illustrated Swimsuit's 50th Anniversary party in New York on Tuesday night -- debuting her newly-dyed follicles at the bash.

The stunning 40-year-old tells toofab that Julianne Moore and Amy Adams were the inspiration for her new copper 'do, which she attained by using Nexxus Color Assure.

What do you think of the model's new look? Vote in the gallery above!

And watch the video below to see what she said about reuniting with some of her fellow supermodels at the SI event -- and why she's nervous about showing her baby boy her new 'do!

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