She stunned in a cobalt blue sleeveless Versace gown at the Academy Awards on Sunday night, but it wasn't Jennifer Garner's dress that was the main focus of attention at the glitzy award ceremony in Los Angeles.
The actress, 45, sent social media into meltdown when cameras caught her pulling a bewildered facial expression in what appeared to be an epiphany moment, the Daily Mail reports.
The American beauty, who was sitting beside actor Chris Messina, was applauding with the rest of the crowd when she suddenly stopped and her facial expression transitioned to one of pure shock.
And while no-one knows why the star wore such a startled expression, viewers took to Twitter in their droves to guess what the Pearl Harbor star was thinking.