Ariana Pushes Her New Bad-Girl Image With Sexy iHeartRadio Performance

Singer dons a sexy black number for her performance of 'Problem' on Thursday night.

When Ariana Grande first took the stage at the iHeartRadio Music Awards, wearing a long sleeved black dress, fans may have thought they were in for another sweet from her Yours Truly days.

Her performance "The Way" on Thursday night (May 1) was, like the song itself, rather sweet -- she did cute little dance and bopped up and down. But when sassy horns of her latest hit, the Iggy Azalea-assisted "Problem," sounded, the whole affair became quite a bit more, well, bad.

That's when Yours Truly singer stripped off the long-sleeved number for something decidedly more adult -- a sexy, black sequined dress, which looked all the more scandalous paired with the knee-high white go-go boots reminiscent of the track's artwork.

Like her outfit, her moves in the second half of her performance were also more.. grown-up. Her hip movements were enough to get a nod (and a bit of a chuckle) the bad girl in charge, Rihanna.

"Problem," the lead single off of Ariana's upcoming second studio album, made history earlier this week by climbing to the top of the iTunes charts in a record-breaking 37 minutes.

Grande went on to take home the Young Influencer Award at Thursday's show.