Dancers of Vila Isabel samba school, parade on a float during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday Feb. 20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade.—AP Photo

Dancers of Vila Isabel samba school parade during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday Feb. 20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade.—AP Photo

Dancers of Vila Isabel samba school parade on a float during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday Feb. 20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade. —AP Photo

Revellers from the Vila Isabel samba school parade on the first night of the annual Carnival parade in Rio de Janeiro's Sambadrome February 20, 2012. — Reuters Photo

Performers from the Beija Flor samba school parade during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday, Feb. 20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade. —AP Photo

A dancer from the Imperatriz samba school sings during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Sunday, Feb. 19, 2012. —AP Photo

A performer from Renascer de Jacarepagua samba school dances on a float during a carnival parade at the Sambadrome in Rio de Janeiro, Brazil, Sunday Feb. 19, 2012. —AP Photo

Performers from the Mocidade Independente de Padre Miguel samba school parade during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday, Feb.20, 2012. —AP Photo

Performers from the Unidos da Vila Isabel samba school parade during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday, Feb.20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade. —AP Photo

Performers from the Unidos da Vila Isabel samba school parade during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday, Feb.20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade. —AP Photo

Revellers from the Porto da Pedra samba school parade on the first night of the annual Carnival parade in Rio de Janeiro's Sambadrome February 20, 2012. — Reuters Photo

Revellers from the Beija-Flor samba school parade on the first night of the annual Carnival parade in Rio de Janeiro's Sambadrome February 20, 2012. — Reuters Photo

Performer from the Beija Flor samba school parades during carnival celebrations at the Sambadrome in Rio de Janeiro, Brazil, Monday, Feb. 20, 2012. Millions watched the sequin-clad samba dancers at Rio de Janeiro's iconic Carnival parade. —AP Photo

Revellers from the Mocidade samba school parade on the first night of the annual Carnival parade in Rio de Janeiro's Sambadrome, February 19, 2012. — Reuters Photo