The 27-year-old actress stunned in a black Alexandre Vauthier dress with a plunging neckline, Louboutin heels and Melissa Kaye jewels.
E! News caught up with Amber, who revealed the key to her fitness routine and how she maintains that killer body of hers.
"I'm active," she said. "That's the key. I'm not really one to go sit in a gym." Oh, so that's how she stays in such enviable shape.
"I get claustrophobic, I guess," Amber continued. "I'm lucky though. I live in L.A., so I have a lot of time to be outside and be active. That's what I do."
Amber also dished on her French-speaking skills, telling us what she was able to master while working in Paris.
"I can order some wine," she said, smiling. "The important stuff."
Cheers to that!
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