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Camila Alves, Reese Witherspoon, Jessica Alba, Sandra Bullock, Cate Blanchett, Best Dressed

Mike Marsland/WireImage/Michael Buckner/Frazer Harrison/Lisa Maree Williams/Getty Images

Another week, another crop of perfectly-polished celebs looking glam.

Let's get right to the good stuff and talk about one of our favorite looks of the week: Reese Witherspoon, who was the host of the Stand Up to Cancer event benefitting the American Cancer Society. Creamsicle orange can be a tricky color to pull off, but Reese did it flawlessly.

Another standout at the charity event was Jessica Alba, who looked fresh in a pretty white floral dress by Ralph Lauren and a dark berry lip. Sandra Bullock also kept it simple in an all-black Roland Mouret strapless gown at the Annual Directors Guild Of America Awards.

Then there's Cate Blanchett, who opted for a glitzy Givenchy gown with a daringly low neckline at the Annual Directors Guild Of America Awards. And we've got to hand it to Camila Alves, who looked fabulous in a strapless ivory Pamella Roland gown at the London premiere of Dallas Buyers Club