Hayden Panettiere heats up the season six premiere of Entourage on Thursday (July 9) at the Paramount Studio Lot in Los Angeles.The 19-year-old Heroes hottie wore a cream strapless cocktail dress with seafoam green beaded leather overlay by Christian Cota. She accessorized with Van Cleef & Arpels jewels and nude Christian Louboutin peep-toes and clutch.Hayden and fellow underage actress Alexis Dziena (pictured inside)