Are Nick & Vanessa, Sienna & Hayden and other duos made for each other? Tell us! By Emily Fromm
Updated: Thursday Mar 30, 2006 | 06:00 AM EST
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Sienna Miller and Hayden Christensen, both 24, flirted while filming Factory Girl in Louisiana (left, at a January cast party), and recently took their snuggle-fest off set: They've been spotted in Toronto, near his hometown, and in hers, London.
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