Beyonce Knowles' sister, singer Solange Knowles, went on a local Fox affiliate the other day to promote her album-only after her publicist made it clear that the young diva was NOT to be questioned about her brother-in-law Jay-Z or the failure of his 40/40 Club in Las Vegas. And since it was a harmless fluff piece to fill airtime, the interviewer agreed and didn't mention a thing about it. Sadly, Solange apparently heard some studio chatter while she was being introduced, mistakenly assumed that it was being broadcast, and proceeded to pick a fight. The embarrassing footage ensues.