She’s no stranger to massive industry events, and earlier this evening (May 19) Ariana Grande paid a visit to the MGM Grand Garden Arena in Sin City for the 2013 Billboard Music Awards.

The “Victorious” star was all about hamming it up for the paparazzi as he/she hobnobbed with fellow attendees along the way.

Meanwhile, young singer Austin Mahone brought his boyish charm out for the night and struck a few poses before heading inside.

Competition for each and every trophy tonight will be fierce, with “Saturday Night Live” alum Tracy Morgan handling the hosting duties.

The top nominees this time around are Taylor Swift, Maroon 5 and fun each with eleven chances at scoring some hardware, while Rihanna received ten nods and Carly Rae Jepsen was nominated in nine different categories.