She had to know Billboard Music Awards press would ask about rumors she's engaged to Wladimir Klitschko, but Hayden Panettiere played it cool Sunday night, offering only "no ring," when grilled by E! News. And though the "Nashville" star's left ring finger was bare over the weekend, it was certainly sparkling at last week's ABC upfront, thanks to a hard-to-miss platinum and diamond band. "I'm kind of confused as to when they think that's going to happen," said Panettiere of the wedding rumors. "We shoot from the end of July to the end of April."