It's back to work for Reese Witherspoon, who hit the red carpet to promote her new film just one week after returning from her honeymoon with new husband Jim Toth.

Though her hubby wasn't with her on the carpet, Reese looked gorgeous in a white Jason Wu cocktail dress -- with "Water for Elephants" co-star Robert Pattinson on her arm, looking equally dashing in a sexy suit. Their movie opens this Friday.

Also having their premieres this weekend were "Fast Five" and "Thor." And while The Rock, Vin Diesel and Paul Walker had theirs in Rio de Janeiro, handsome Chris Hemsworth hit the red carpet down in Sydney.

Check out all the premiere pics!

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