Hayden Panettiere Makes Today Sunny

With the final daze of summer upon us, Heroes vixen Hayden Panettiere riled things up in a very simple but chic, soft yellow sundress. Gooooo team!

Although the beautiful 18-year-old Hayden Panettiere enjoyed a post-lunch cookie in West Hollywood on Tuesday afternoon, she turned out to be the real treat!

Sorry, that was lame. But take a look at that pic. Or any Hayden Panettiere pictures you can find. Tell us we’re not right on the money there. Eh?