Christina Aguilera National Anthem Super Bowl, Watch Video

Christina Aguilera sings the national anthem before the NFL football Super Bowl XLV game between the Green Bay Packers and the Pittsburgh Steelers Sunday, Feb. 6, 2011, in Arlington, Texas.

She replaced "o'er the ramparts we watched" with "what so proudly we watched,"

But there is no mistake by Aguilera if taken in honest way, since the song was difficult and lengthy , most importantly It was Superbowl kickoff and there were Millions of people to watch the show.

It is not the first time and Aguilera is not the only singer to make a mistake while singing the National Anthem.

In 2009 Jesse McCartney goofed the words before the NASCAR Fontana Race. In Dec. 2010, the lead singer of the Eli Young Band flubbed the words before a Kansas City Chiefs-Denver Broncos game.

Watch the Christiana Aguilera National Anthem Super Bowl video

Tags : christina aguilera national anthem, christina aguilera, christina aguilera leaked photos, christina aguilera messed up national anthem, christina aguilera super bowl