16. Revellers pose as they arrive for the first night of the Carnival parade of samba schools in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ueslei Marcelino
17. Revellers of the Sao Clemente samba school participate in the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Sergio Moraes
18. A reveller of the Sao Clemente samba school participates in the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Sergio Moraes
19. Drum Queen Bruna Almeida of the Sao Clemente samba school gets ready for the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ricardo Moraes
20. A reveller of the Sao Clemente samba school gets ready for the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ricardo Moraes
21. Revellers from the Sao Clemente samba school prepare for the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Sergio Moraes
22. A reveller waits for the start of the annual Carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ricardo Moraes
23. A reveller waits for the start of the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ricardo Moraes
24. A reveller prepares for the start of the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ricardo Moraes
25. Revellers of the Sao Clemente samba school participate in the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ueslei Marcelino
26. Revellers of the Sao Clemente samba school participate in the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ueslei Marcelino
27. A reveller of the Sao Clemente samba school participates in the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Sergio Moraes
28. Revellers of the Sao Clemente samba school participate in the annual carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Sergio Moraes
29. Revellers of the Sao Clemente samba school participate in the annual Carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Sergio Moraes
30. Revellers of the Sao Clemente samba school participate in the annual Carnival parade in Rio de Janeiro's Sambadrome March 6, 2011. REUTERS/Ueslei Marcelino