It seems that Rob has had a bout of nausea on the set of Breaking Dawn. Either that or he is prone to sea sickness. Whatever it is, it is the cause for a possible wardrobe change for Kristen Stewart's dress.
We are told not to worry about filming, that it is all on schedule and this little vomiting incident will not push back the release date. The only problem right now is a highly disputed charge on who should pay the dry cleaner.