The singer belts out some of the late music icon's biggest hits.
ET sat down with the 23-year-old to dish on her emotional new single.
The singer dished to ET about the raw video, which she called the hardest one she's ever shot.
Demi Lovato wants us to remember what's important.
Swift donated $250,000 to Kesha's legal fund.
The "Skyscraper" singer denies throwing shade at the GRAMMY winner.
The girls shared a laugh on Twitter after their spooky evening.
Stars... they're just like us.
The 'Confident' singer nails her rendition of the SpongeBob SquarePants theme song on The Tonight Show with Jimmy Fallon.
The 23-year-old singer absolutely nailed her impression of 'The Voice' coach on Friday's 'Tonight Show.'
This might be the meanest "Mean Tweets" ever!
Just wow.
From where to watch to who's performing, ET's got you covered on all the gotta-know-it info ahead of music's biggest night.
The star says before the Kardashians, she didn't know curves could be sexy.
