Ariana Grande premiered newest single "Problem" featuring Iggy Azalea on Saturday at the Radio Disney awards, and received quite the reaction! The single is currently No.1 on the iTunes charts. Congrats to them!

Grande donned a pair of Mickey Mouse ears for the event along with an adorable ensemble consisting of black leggings and a leather top.

"Had a great time at the #RDMAs! thank you so much for having me and for my award. So grateful!! thank you!" the starlet tweeted after the event.

It was not long until the single over took the iTunes charts, leaving Grande "overwhelmed," according to Entertainment Wise.

"Number 1 already loves you never fail to amaze me..... so grateful. I hope you enjoy problem. Been dancing in my kitchen with the crew for hours I can't breathe..... time for a brief sleep. love you," the songstress tweeted.

Broadway World points out Grande's debut album, "Yours Truly," was released five months ago and topped the Billboard 200. This time around, she knocked Pharrell William's "Happy" out of the top spot. She is the first female artist to debut an album at No.1 since Ke$ha's 2010 album, "Animal."

The song includes heavy brass and kick drum sounds, and a saxophone portion that Fuse compares to Jason DeRulo's "Talk Dirty." Grande sings about relationship woes, with lyrics consisting of:

"Tell me, tell me baby / Why did you leave me? / 'Cause even though I shouldn't want it / I gotta have it / I want you."

Azalea, whose album dropped last week, chimes in with a tougher approach, singing lyrics consisting of:

"I'm thinkin' I love the thought of you / More than I love your presence / And the best thing now / Is probably for you to exit."

Have you listened to "Problem" yet? What do you think? Let us know your thoughts in the comments section below!