Katy Perry

With the exciting news that Taylor Swift will be appearing on the season finale of New Girl, we got to thinking about other pop stars who've done some work on

Today was the day to be in New York City. Not only is it delightfully warm and sunny, but Heidi Klum, Ashley Tisdale, Eva Longoria and Shia Labeouf have been

Click through the photos below to see who got hitched, who hooked up and who confirmed their couple status (!!!) over the July 4th Weekend

Unfortunately Amanda was hardly a trendsetter today when it comes to the teal tresses. These celebs have rocked blue in all different shades and styles!

Celebrities are used to getting what they want… when they want it! Make no mistake, if you're a lowly roadie and Mariah asks you to jump, you better say "How

See the best celebrity pics of the day including Joe Jonas in NYC, Katy Perry, Usher and more.

Celebrity instagram pictures like Justin Bieber tattoo, Katy Perry album artwork and more,

Hilarious GIFs from the VMAs of the past, including one of Taylor Swift dancing on stage in a striped shirt.

Enjoy this trip down "did they seriously wear that?!" memory lane.

Best Celebrity and MTV instagram photos leading up to the 2013 MTV Video Music Awards August 26 2013 at Barclay's Center.

This is the fashion stuff we LIVE for! Count down the all-time greatest style hits!

But while many things have changed since 1984, one thing remains the same: The VMA's are still a damn good time. Take a look at the VMAs, then and now.

Here are the celebs that killed it on the red carpet and put the rest of the competition to shame.

Following the competitive game on the field, stars celebrated at DIRECTV's 6th Annual Celebrity Beach Bowl After Party on Saturday night, where the likes of

There were some great style moments at this past weekend's 54th Annual Grammy Awards! Celebrity hair at the event ranged from shocking — Katy Perry's blue hair!

Day 2 of the Coachella Music Festival brought out stars like Katy Perry, Lea Michele and Lauren Conrad, who hit up the LACOSTE L!VE Pool Party for a quick break

See 16 must-see moments from MTV's VMAs in gif form.

The cutest cat-inspired clothes and accessories inspired by Katy Perry's new single, "Roar."

Bruno Mars and other artists who should perform at Super Bowl halftime show 2014 XVLII in New Jersey.

A few years ago, you had never even heard of this iHeartRadio event. Now? It's one of the biggest weekends in music! Check out the wild looks A-listers rocked at the festival.

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.