Heard and Depp walk red carpet
Published 13/02/2014 | 12:27
They posed with their arms around each other, and later Johnny, 50, who was previously with long-term partner Vanessa Paradis, 41, kissed Amber, 27, on the cheek.
Amber, wearing a black slit-to-the-thigh dress and posing with her hair swept to the side, showed off an impressive diamond on her ring finger, which has sparked speculation that the couple are engaged.
Johnny has been dating Amber since 2012, after they met on the set of 2011 film The Rum Diary.
They publicly confirmed that they were dating later that year, just after the Pirates Of The Caribbean star and Vanessa, the mother of his two children, announced their split.
But they've never confirmed reports that they're planning to marry and that Johnny had popped the question on Christmas Eve.