Michel Roger, the head of Monaco's government, has railed against "false" rumours of discord between Prince Albert II and his wife, and said the couple will sue a French magazine for spreading them.
"It is very distressing," Mr Roger, whose official title is minister of state, told journalists of the gossip that swirled around the wedding held over two days in early July.
Rumours that Charlene Wittstock tried to leave the principality in a huff just days before the royal wedding have already been rejected by the palace, a lawyer for the princely pair, as well as by Albert himself.
"They are all false," added Mr Roger.
L'Express magazine had reported on its website that Miss Wittstock, now Princess Charlene, interrupted preparations for the lavish celebrations and prepared to take a flight for her home country South Africa.