The most powerful name in news, TMZ, has footage of Beyonce Knowles' sister, Solange, attacking Jay-Z in an elevator. 

The grainy surveillance footage, taken last week, shows Solange unleashing a fury of strikes — a wild torrent of feet and hands not seen since Street Fighter IV — at her brother-in-law. Solange was restrained and escorted into another car with her sister, separate from Jay-Z, whose problems have numbered 99 in the past, but have not eclipsed 100 until now.

The hip hop mogul was attending an after party for the Met Gala at the Standard Hotel in New York City. TMZ has no idea what prompted the fight (that's not their job!), but you can watch the whole thing right here.

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