Sandra Bullock  George Clooney venice film festival gravity

Single stars George Clooney and Sandra Bullock were looking super sexy together on the red carpet at the premiere of Gravity at the Venice Film Festival on Wednesday.

The twosome was also photographed arriving in style -- by boat -- to the star-studded event. While the Oscar winners are merely friends -- we can't imagine a cuter Hollywood couple!

The on-the-go mom has been spotted taking care of son Louis all summer. After announcing his split from his girlfriend of two years, Stacy Keibler, in July, Clooney has been enjoying bachelorhood.

Gravity, which is directed by Alfonso Cuaron, is a film about medical engineer (Bullock) and an astronaut (Clooney) who must work together in order to survive after an accident leaves them adrift in space. Gravity takes flight into theaters on Oct. 4.