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Has Miley Cyrus gone from the prime Australian beefcake that is Liam Hemsworth to the meat byproduct that is Kellan Lutz? Romance rumors starting a-flying on Wednesday when paparazzi snapped the modesty-renouncing chart-topper exiting a private plane in Miami just steps ahead of the brawny "Twilight" second banana (see pics below).

Miley, in Daisy Dukes and fuzzy boots, made her airport egress with her best friend, Cheyne Thomas. The group had reportedly just returned from an overnight jaunt to the Bahamas, which might explain why Lutz was wearing an oversized pair of pale purple flip-flops.

Adding fuel to the hookup speculation: Lutz, who called it quits with Australian actress Sharni Vinson in May, attended Miley's Jingle Ball performance last Friday at New York's Madison Square Garden.

So, is a hookup brewing? Doesn't look that way. Insiders insist to E! News that Miley, 21, and Kellan, 28, are "definitely not a couple." Instead, a source tells Gossip Cop, they're merely pals who have "known each other forever."

Still, the sighting comes at a good time for Lutz, who's in Miami promoting his starring role in the forthcoming "Legend of Hercules." Judging by his accent in the mostly shirt-free, pecs-heavy trailer, some extra publicity can't hurt.

Miley, who rebounded from her September split with Hemsworth by reportedly locking lips with Benji Madden on Halloween, is performing in Florida this week.


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