Christina Aguilera's National Anthem Flub

Some celebs are better known for their lines off the big screen than on it. But even their star-powered charm can't repair the damage their wayward remarks have done to their reputations.

Wardrobe malfunction? More like warble malfunction. Christina Aguilera made sure Super Bowl XLV started off on the right note - too bad she couldn't hold it there.

The 'Burlesque' star, 30, who has sung the National Anthem at many previous sporting events, including Game 7 of last year's NBA finals, bungled the lyrics, causing confusion amongst the crowd and with viewers at home.

'What so proudly we watched at the twilight's last reaming,' she belted about one minute into the song, to the bewilderment of somber Super Bowl fans.