Pop star Janet Jackson's notorious "wardrobe malfunction" at the 2004 Super Bowl will cost US TV bosses $550,000 (GBP315,000) in censorship fines, after they lost an appeal to overturn the fine.

Authorities have cracked down on CBS for broadcasting the blunder and upheld the previously-imposed punishment.

Jackson inadvertently exposed her breast while on stage with Justin Timberlake at the half-time show.