TMZ News VIDEO: Jennifer Lopez Packs in Celebs for Vegas Opener

Seriously, it could’ve been a Hollywood award show — Justin Bieber, Scooter Braun, Ryan Seacrest, Rebel Wilson, T.I., Rosie Huntington-Whiteley, Kelly Osbourne,Hoda Kotb, Derek Hough, Nicole Scherzinger and many, many more.
Additional footage provided by Ceasers Entertainment.