The music icon hosts the most A-list dance party of all time.
Fans can't help but notice all the comparisons between Madonna's new music video for 'Bitch, I'm Madona' and Taylor Swift's 'Bad Blood' video!
Look out Taylor Swift! There's a new all-girl video about to hit.
There's a new Amy in Tina Fey's life!
Break out the sunglasses -- you'll need those shades to recreate these bright looks!
For these stars summer times means rocking hair color brighter than the sun!
The film features covers of '80s hits, including 'Girls Just Wanna Have Fun.'
ET's looking back at our Top 10 moments with David Letterman over the years.
According to the 'Mechanical Animals' singer, he would 'definitely fornicate with her.'
The singer-songwriter and rapper counts Kanye West, Madonna, Lorde and Sam Smith among his famous fans.
The 30-year-old singer-songwriter and rapper has already worked with Kanye West, Madonna and Lorde.
Justin Bieber partied with Leonardo DiCaprio at Rihanna's Met Gala after-party -- you have to see this video of him dancing... and flicking Leo's hair.
Watch the skin-crawling moment.
The singer talked to ET about her Kris Jenner-inspired hair, nails, and Kardashians at fashion's biggest night, the Met Gala.
