Ariana Grande and Barbra Streisand Perform Surprise Duet
She said she'll cherish the moment forever.
Ariana Grande
Ariana Grande Faces Lawsuit for Posting Photos of Herself
The pop star is being sued for posting a pic without the paparazzi's permission.
Pete Davidson Reportedly Proposed to This Girl Before Ariana
Turns out, Ariana Grande and Cazzie David have more in common than you think.
See Celebrities Dressed Like Santa Claus
See stars like Katy Perry, Snoop Dogg and Mariah Carey dressed in their Santa Claus best.