Hayden Panettiere - JACK's Crush Of The Week

(credit: Frazer Harrison/Getty Images)

Hayden Panettiere - JACK's Crush Of The Week

(credit: Kevork Djansezian/Getty Images)

Hayden Panettiere - JACK's Crush Of The Week

(credit: Christopher Polk/Getty Images for DIRECTV)

Hayden Panettiere - JACK's Crush Of The Week

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Hayden Panettiere - JACK's Crush Of The Week

(credit: Jason Merritt/Getty Images)

Hayden Panettiere - JACK's Crush Of The Week

(credit: Frazer Harrison/Getty Images)

Hayden Panettiere - JACK's Crush Of The Week

(credit: Michael Loccisano/Getty Images)

Hayden Panettiere - JACK's Crush Of The Week

(credit: Jason Merritt/Getty Images)

Hayden Panettiere - JACK's Crush Of The Week

(credit: Frazer Harrison/Getty Images)