Celebrities took to social media to praise Gaga after she totally dominated Pepsi's Zero Sugar Super Bowl LI Halftime Show.
Katy Perry performed at the 2015 Super Bowl Halftime show.
Katy Perry knows the stress!
Before Lady Gaga hits the stage, we're looking back at the stars who made the biggest impact during the big game.
The 33-year-old supermodel tells ET she's hosting a game day party at her home in Los Angeles on Sunday!
A slew of celebrities joined thousands of people across the country on Saturday to march for women's rights.
Famous faces like America Ferrera, Ashley Judd and Janelle Monae will be speaking and performing at the event on Saturday.
The 'Lord of the Rings' star is very comfortable with his friends!
The British actor turned the big 4-0 on Friday.
The 'Roar' singer even got the actor's mom involved in the festivities.
ET is looking back at the adventure seeker's time on set of 'Fellowship of the Ring' in honor of his 40th birthday!
The 51-year-old TV producer dishes on his latest series.
From Superheroes to Taylor Swift, we break down the most anticipated new projects.
The couple got creamed!
