Wales have won the Grand Slam and the Six Nations Championship with a 29 points to 12 win over France at the Millennium Stadium in Cardiff.
Early on France had narrowed Wales' 9-3 lead after Gavin Henson was yellow carded for a high tackle.
But Shane Williams got the crucial score on 60 minutes to become Wales' all-time top try scorer.
Earlier, England beat Ireland to come third, and Scotland lost to Italy but escaped the wooden spoon.
Danny Cipriani helped England to the 33-10 victory by landing all seven of his goal kicks at Twickenham.
Scotland lost to Italy
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The result left Ireland in fourth place in their worst championship finish since 1999.
Scotland lost to Italy by 23-20, but the Italians finished bottom of the championship as they needed to win by at least five points to avoid finishing last.