AP / REX USA / . 1 / 11
AP / REX USA / . 1 / 11

Hayden Panettiere's got a hot new 'do! The 24-year-old "Nashville" star showed off a sexy new look during an appearance on "The Late Show with David Letterman" on Wednesday.

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Wearing a short red-and-blue printed Alexander McQueen dress and red Saint Laurent heels, Panettiere took the stage sporting new blunt bangs and platinum blond hair.

"You look like a summer vacation," David Letterman said, commenting on her colorful dress. "I look like stained glass," she joked.

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During her appearance, the actress talked about a recent vacation she went on with secret fiancé Wladimir Klitschko -- who is roughly twice her size! -- where they traveled around on jet skis. "They're really safe with a 110 pound girl on it, but when you add a 245-pound Ukranian on the back it doesn't go so well," she joked.

"This thing started sinking!" Panettiere recalled. "I got so mad. I got so scared that I got mad at him. ... The water started coming over the edge. I was like, 'This is illegal!'"

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A source confirmed to Us Weekly in March that Panettiere and the Ukrainian boxer, 37, are engaged, but the actress has yet to publicly confirm the news. She did, however, tell Letterman that they've known each other for "five or six years now."


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