  Multi-lepton signatures appear in many new physics searches at the Large
Hadron Collider. We here consider WWZ production with subsequent leptonic decay
of the three vector bosons as a SM source of multi-lepton events. We have
calculated the next-to-leading order QCD corrections for the full $p p\to 6$
lepton production cross sections in hadronic collisions. Results have been
implemented in the form of a flexible parton-level Monte-Carlo program which
allows to calculate the QCD corrections for arbitrary distributions and
acceptance cuts.
