Kacey Musgraves threw a disco-themed roller skate birthday party with her friend and tourmate, Katy Perry! Check out the photos and video from her throwback party.
We dug up vintage yearbook pics of celebs like Taylor Swift, Katy Perry, Miley Cyrus, Rihanna and more!
Check out the Ice Bucket Challenge roundup to watch 30 celebs who took on the challenge for ALS awareness!
The NFL is reportedly asking Rihanna, Coldplay and Katy Perry to pay to perform at the 2015 Super Bowl Halftime Show.
This week's Pop Clash pairing promises a very tight competition! Katy Perry's saucy 'This Is How We Do' faces off against Ed Sheeran's tell-off 'Don't.' Who should win the Pop Clash?
Katy Perry is inviting her Katy Cats to get a behind-the-scenes look of her latest music video 'This Is How We Do.’
What do you do when you're a superstar with the world at your fingertips? If you're Katy Perry, you take the opportunity to continue to learn!
Having a rough morning? Take a cue from this adorable baby and banish that cranky attitude with a little help from Katy Perry's 'Dark Horse'.
Ariana Grande, Beyonce, Iggy Azalea, Katy Perry and Lorde are all facing off for the coveted Best Female Video award at the 2014 MTV VMAs, but only one can walk away with the prize!
Katy Perry had the honor of performing at the White House last night (July 31) for 'A Celebration of Special Olympics and a Unified Generation.'