Robert Pattinson and Kristen Stewart from Hotel Balcony to party spirit in Brazil!

Being in the Brazilian party capital Rio De Janeiro seems to have momentarily affected Kristen Stewart and Robert Pattinson. The normally somber pair cheerily waved to fans from their hotel balcony this afternoon, and even performed a short dance.

They both wore sunglasses and were dressed casually with Stewart, 20, wearing denim shorts and a white vest top and Pattinson, 24, in a red T-shirt. The pair, who are rumoured to be dating, are in the Brazilian city to film honeymoon scenes for the next Twilight film Breaking Dawn. And they were clearly enjoying taking the opportunity to relax before they embarked on a night shoot in the evening.

The pair were spotted filming a kissing scene in the middle of one of the city's streets. Wearing a sky blue shirt, Pattinson later chatted to Stewart in between takes as they filmed a scene on a boat.

Stewart looked dressed for somewhat warmer weather in a strappy, short cream dress.

Filming on the new movie officially began last week in Baton Rouge, Louisiana, and is expected to continue in Vancouver.

Breaking Dawn, the fourth book in Stephanie Meyer's Twilight series, will be broken down into two movies with the first part in cinemas next year and the second half to be released in 2012.

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