Ariana Grande

The pop star went all out this year.

Get ready for Halloween with these celebrity-inspired costumes you can find in your own closet.

Watch the three pop stars' angelic new video!

Find out who will walk away with a Moonman this year!

Ariana headlined the festival.

Celebrities are sharing their thoughts on the Amazon Rainforest's fires.

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

She said she'll cherish the moment forever.

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

From Miranda Cosgrove to Amanda Bynes, see what your favorite Nickelodeon stars look like today.

Ariana was all smiles!

The 6-year-old beauty queen was murdered in 1996.