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Er, seductive smirk? Either way, we can't get enough of that hair ... or the twinkle in his eyes!

Robert Pattinson posed for photos outside of David Letterman's studio on Tuesday, and the Twilight hunk looked so hot, he's practically melting our monitors! Rob appeared on The Late Show to promote Breaking Dawn, and we can't wait to see what he shared in his interview! Maybe he'll reveal some new dirt on him and lady love K. Stew's relationship?