Teen pop sensation Miley Cyrus proved she was all grown up as she attended the CNN Heroes: All-Star Tribute in Los Angeles last night (December 11th).

The 19-year-old stepped out in a full-length ball gown, sparkling silver bracelet and dangling diamond-encrusted silver earrings.

Smiling for the photographers, she posed with beau Liam Hemsworth, whom she met during the filming of 2010’s The Last Song.

The couple have been happily cosied-up ever since, with Hemsworth brimming on the edge of total stardom ahead of the highly-anticipated movie, The Hunger Games, due out next year.

This festive season it might be worth following Cyrus’ lead and investing in online jewellery as a great diamond ring polished the star’s look perfectly.

The silver high-waist belt hugging her dress to her waist complemented the effects of the jewellery as the en vogue ensemble waved a big goodbye to the image of Hannah Montana.

12-12-11 Cyrus sparkles in silver