Hayden Panettiere Hot Dressing at 2011 Oscar: Hayden Panettiere has a habit of dressing a little too maturely for her 21 years, often gravitating towards gowns that have her looking like something of a society dame. Thankfully that was not the case on Sunday, when she showed up at the Elton John AIDS Foundation's Oscars Viewing Party in a glittering white Luca Luca dress. Bravo!