Notorious celebrity pranksterVitalii Sediukhas struck again -- and this time his victim wasJustin Timberlake.
The singer and actor was heading into Louis Vuitton's Paris Fashion Week show with wife Jessica Bielwhen the man struck, grabbing Justin's leg in an attempt to knock him down.
Fortunately, security jumped in and got the guy off Justin.
Vitalii has also attackedGigi Hadid,LeonardoDiCaprioand BradPitt. In 2013, he rushed the stage at theGrammys.