Janet Jackson's top came open "accidentally" during a duet with Justin Timberlake at the Superbowl.
During half-time at the 2004 Superbowl, Janet Jackson exposed her nipple ring adorned breast with Justin Timberlake.
Whether the publicity stunt was intended to sell albums or take the spotlight off her brother Michael Jackson's child molestation "allegations" is unclear. But in one instance it appears to have worked.