By Andrea Cheng
Updated Feb 23, 2015 @ 11:35 am
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Credit: Getty Images (3)

No contest here—these ladies are bringing sexy back. At the 87th Academy Awards, Lupita Nyong'o wowed when she showed up in an exquisitely pearl-and-crystal embroidered custom Calvin Klein Collection halter-neck creation (above, left). From the front, we were blown away by the fit and the detailing. And the back? Equally as stunning, with straps hugging her every curve.

Naomi Watts glittered on the red carpet in a silvery scaled Armani Prive number, which was secured in place by a black caviar beaded bandeau and delicate black straps (center). And Emma Stone bared her back (no strings attached!) in an incredible custom long-sleeve chartreuse gown embroidered with guipure and sequins (right).