Katy Perry

From swanky red carpets to everyday errands, check out OK! Quick Pics below for our favorite celeb photos of the day featuring Rose Byrne, Common, Julianne Hough, Ciara and more.

Photos of celebrities wearing pink for October Breast Cancer Awareness month.

Take a little inspiration from Hollywood's A-listers the next time you're in the market for some fashionable new frames.

See John Mayer's Transformation (And Girlfriends) Throughout the Years In Our OK! Old School.

List and photos of top celebrity music couples in pop, country and rap music who did song collaborations in the studio.

11 pictures of celebrities wearing darker floral prints, including Kerry Washington, AnnaSophia Robb, and Kelly Ripa.

See what Katy Perry, Miley Cyrus, Kelly Rowland and more were up to in our Best Celebrity Instagrams Of the Week.

See what Nicole Richie, Blake Shelton, Hilary Duff and more of your favorite stars were up to in our Best Celebrity Instagrams Of The Week.

See what Justin Timberlake, Katy Perry, Justin Bieber and more of your favorite stars were up to in today's OK! Quick Pics.

Glam squads across Los Angeles pulled out all the stops to perfect the faces and coifs of these beauties who graced the 2013 American Music Awards. From Naya

See John Mayer and Katy Perry's Adorable Photoshoot For Their New Single "Who You Love."

Full list of pop records, albums and singles that will get Grammy nominations awards for the 56th annual Grammys January 26 2014.

See what Katy Perry, Cameron Diaz, Kim Kardashian and more were up this week on in our Best Celebrity Instagrams of the Week.

See what Cody Simpson, Taylor Swift, John Mayer and more of your favorite stars were up to in our Best Celebrity Instagrams of the Week.

List and photos of celebrity best friends, famous BFFs that should host award shows together like Katy Perry and Rihanna, Jimmy Fallon and Justin Timberlake.

The Grammys have the potential to be one of the weirdest red carpets of the year. Stay tuned to this slideshow to make sure you don't miss a single crazy

Watch a live stream video of the red carpet and performances at the 2014 Brit Awards at O2 Arena in London, hosted by James Corden.

Never one to shy away from an eccentric beauty look, Katy Perry channels her inner Cleopatra as only she can for her upcoming video for "Dark Horse." Jake

[caption id="attachment_1000935487" align="aligncenter" width="600"] Getty Images[/caption] Katy Perry looked positively ethereal on the red carpet of the

Stream a playlist of songs, albums, artists nominated at the 2014 GRAMMY Awards on January 26 like Katy Perry, Justin Timberlake, Drake.

The 15 celebrities we can't wait to see on Comedy Central's Kroll Show season 2 starring comedian Nick Kroll.

See which 5 celebrities landed on our five hottest celebrity makeovers list of 2013.

Patti Stanger discusses what's ahead for celeb couples in 2014 including Kim and Kanye, John and Katy and Justin and Jessica.

Hear the songs that did not get nearly enough appreciation in 2013 including Katy Perry, Justin Timberlake, Drake and Miley Cyrus.

See what Aaran Paul, Jimmy Kimmel, Katy Perry and more of your favorite stars were talking about on Twitter in today's Tweet Repeat.

Watch the music video debut of couple Katy Perry and John Mayer in their video for "Who You Love," with resemblances to Kimye in Bound 2.

Get A First Look At Katy Perry and John Mayer's "Who You Love" Music Video In Our Gotta See It Gram of the Day.

See what Sarah Hyland, Katy Perry and more of your favorite stars were saying about Beyonce's surprise album!

See what Jamie Foxx, Katy Perry, Robin Thicke and more of your favorite stars were chatting about on Twitter in today's Tweet Repeat.

See what Britney Spears, Mario Lopez and more of your favorite stars were chatting about on Twitter in Tweet Repeat.

Niall Horan and Katy Perry took breaks from their hectic schedules for a catch-up dinner in NYC.

See what One Direction, Julia Louis-Dreyfus and all your favorite stars were talking about on Twitter in today's Tweet Repeat.

Quick: Who's your favorite pop diva? Are you more of sweet Taylor Swift girl? Do you respond to Miley Cyrus' twerking and tongue-wagging? Do you worship at the

Watch preview for Katy Perry Unconditionally and full video for Rihanna What Now new singles.

Listen to first hit singles for female pop stars like Lady Gaga Rihanna, Jennifer Lopez, Rihanna, Avril Lavigne, Mariah Carey, Katy Perry.

Katy Perry and John Mayer getting engaged soon

See what Demi Lovato, Eric Stonestreet, Chrissy Teigen and more of your favorite stars were chatting about in today's Tweet Repeat.

Harry Potter star Daniel Radcliffe is reportedly playing an Olympic Runner, Sebastian Coe, in an upcoming movie.

Celeb gossip from October 29th, including one of Hailee Steinfeld's best dressed moments, where she wears a cute one-shoulder gown.

Katy Perry, the reported girlfriend of John Mayer, turns 29 today. Exercise to her greatest hits with this upbeat workout playlist.

Celebrity gossip, including actor Joseph Gordon Levitt and Scarlett Johansson partnership in a new project featuring Scarlett's voice

Pop singer Katy Perry rocked a cute outfit at the iHeartRadio Prism Album Release Party, including a Diane von Furstenberg H.Stern Ring.

Is John Mayer Planning A Proposal To Katy Perry? Find Out When He Is Said To Pop the Question!

Celeb gossip from October 23, including Harper Beckham playing soccer with her dad David Beckham and Katy Perry's celebrity hair collection.

Live stream video on Yahoo of Katy Perry iHeartRadio album release party at Los Angeles theater of performance of songs off new album Prism.

New music, new singles pop songs poll like Demi Lovato Let It Go, Lupe Fiasco Ed Sheeran, Justin Bieber Tyga and Katy Perry Unconditionally.

Celeb gossip from October 17th, including news about Matthew McConaughey's weight loss, Katy Perry's third album release party, and more.

See what Katy Perry, John Mayer, Chrissy Teigen and more of your favorite stars were chatting about on Twitter in today's Tweet Repeat.

Katy Perry To Rock the 2013 MTV EMAs Alongside Anchorman's Ron Burgundy!

Full list of nominations for the 40th anniversary 2013 American Music Awards, AMA nominated artists like Katy Perry, Justin Bieber, Rihanna.