Hayden Panettiere: 'The Cove' Cutie

Hayden Panettiere attends a cocktail reception for the Academy Award nominated documentary The Cove at Andaz Hotel on Thursday (March 4) in West Hollywood, Calif.

The 20-year-old Heroes hottie showed her support for the documentary highlighting the abuse of dolphins in Japan.

On the same evening, Hayden also attended the Artists For Peace and Justice event that Gerard Butler attended before ending her night with some friends.

FYI: Hayden is wearing a grey strapless silk dress with a black wool blazer by Brioni paired with a clutch by Bally. She accessorized with a Joan Hornig Disco Fever Necklace and a cigar ring and pod cuff by Melinda Maria.

10+ pictures inside of Hayden Panettiere looking cute for The Cove cocktail reception…