ET was exclusively behind the scenes with some of YouTube's most popular creators.
Sia joined 'Idol' on Thursday to mentor the remaining hopefuls, who delivered some of their best performances singing her hits.
The singer opened up to 'The Late Late Show' host about the emotional reason why she wears disguises in public.
The 'Chandelier' singer revealed her belief in aliens and her insane egg-carrying skills.
Things are certainly heating up between the two A-listers.
The 13-year-old dancer is leaving the hit show to work on 'several new and exciting projects,' a source says.
Find out who could have had a hit with 'Bird Set Free.'
Ellen DeGeneres also gifted the singer with a super-long wig!
The singer has an epic list of co-writers and producers on her new project.
You won't believe how much fun it is to watch them all wig out.
Here's what ET is looking forward to in the new year.
'Transparent' season two is packed full of cameos and guest stars -- but none are more surprising than Sia, who actually shows her face on screen.
The singer is all smiles in an unexpected season two appearance.
The couple dined at Casa Vega over the weekend.
