Robert Pattinson and Kristen Stewart touched down at the airport in Rio de Janeiro today to continue work on Breaking Dawn. Robert toted along his guitar, and the two were dressed in their usual travel outfits. The twosome and their costars have been working on the final Twilight installment for the past few weeks in Louisiana, where Robert took a break to film a funny cameo in a video for Peter Berg. Kristen returned to Baton Rouge on Monday and has been taking breaks from set to promote Welcome to the Rileys. We caught up with one of Breaking Dawn's newest vampires, who said the script and cast are absolutely fantastic.