Bullock, 49, wore an asymmetrical draped white dress with black and white pumps. Her distinguished co-star Clooney looked regal in a black suit.
The space thriller centers on two astronauts whose shuttle is destroyed during a routine spacewalk. All they have is each other and a dwindling amount of oxygen as they spiral into darkness and fight to survive.
"Gravity" hits theaters on Oct. 4.
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