Ariana Grande

'A perfect glimpse of how f---ing happy and rad my birthday is this year.'

The fans were staring at Harry's moves during Ariana's show.

The comedian said he 'admires' Grande and called her a 'singular talent.'

'Orlando was like, ‘Man, I have such mad respect for her.’'

Everything you need to know about the pop star's new man.

The pop star allegedly used one of his songs without permission.

She said she'll cherish the moment forever.

The two "Boyrfriend" collaborators are reportedly doing more than working in the studio together.

Take a look at Ariana's hilarious new video!

From donut-licking to (fake) severed heads, these celebrity antics had us in a tizzy.