The Stars Come Out to Play in Coachella Valley

Kendall Jenner wore quite a nose ring.

Austin Butler and Vanessa Hudgens matched with their hats.

Sarah Hyland and boyfriend Matt Prokop stayed close.

Lea Michele and Glee costar Mark Salling hugged.

Emmy Rossum and Fergie posed.

Kate Bosworth and husband Michael Polish kissed.

Katy Perry wrapped up in a tent.

Dianna Agron and her rumored boyfriend, Thomas Cocquerel, kissed.

Justin Bieber surprised everyone with a performance.

Nina Dobrev looked gorgeous.

Alexander Skarsgard stepped out with a mystery woman.

Emma Roberts locked lips with her fiancé, Evan Peters.

Beyoncé joined her sister, Solange Knowles, for a surprise performance.

Jared Leto rocked a colorful outfit with Davey Havok.

Jamie Chung and fiancé Bryan Greenberg looked good.

Miles Teller was the captain of the Neon Carnival.

Emmy Rossum looked festival-ready.

Danny Masterson and Kellan Lutz held hands playfully.

Separated couple Hilary Duff and Mike Comrie walked around together.

Fergie hid under a big black hat.

Joe Jonas kissed his girlfriend, Blanda Eggenschwiler.

Dianna Agron danced the day away.

Vanessa Hudgens covered up with a scarf.

Chord Overstreet sipped on a tropical drink.

Steven Tyler bit Katy Perry's hat at the Lacoste party.

Selena Gomez held Kylie Jenner's arm.

Lindsay Lohan was in a jovial mood, flashing a peace sign.

Alessandra Ambrosio struck a pose.

Katy Perry watched a performance.

Dianna Agron and her rumored boyfriend, Thomas Cocquerel, got close.

Jared Leto sported a thick beard.

Kendall Jenner bared her midriff.

Kendall and Kylie Jenner wore all black.

Cara Delevingne wore a patterned top to the festival.

Diddy rocked a shirt with Biggie Smalls printed all over it.

Kelly Osbourne was all smiles.

Alessandra Ambrosio waved her hands in the air.

Rosie Huntington-Whiteley revealed her long stems.

Jared Leto snapped a selfie.

Sarah Hyland shared a sweet moment with her boyfriend, Matt Prokop.

Kellan Lutz showed off his guns while taking a selfie with Ashley Greene.

Shenae Grimes and her husband, Josh Beech, packed on the PDA.

Aaron Paul took his wife, Lauren Parsekian, to the event.

Katy Perry rocked 3-D glasses at Alexander Wang's party.

Katy Perry and Lea Michele linked up.

Alexander Skarsgard and Alexander Wang posed.

Ashley Benson played DJ.

Jamie Chung squirted a water gun.

Nicky and Paris Hilton brought their sisterly love to the festival.

Joe Jonas and Blanda Eggensschwiler held hands.

Kendall and Kylie Jenner clinked popsicles.

Riley Keough and boyfriend Ben Smith-Peterson went out at night.

Julianne Hough hit up the Old Navy Oasis. Source: Michael Simon

Jared Leto covered up.

Aaron Paul ran around and had a blast.

Lance Bass took a stroll with his shirtless fiancé, Michael Turchin.

Emma Roberts and fiancé Evan Peters stayed close.

Kate Bosworth struck a pose.

Kate Bosworth and her husband, Michael Polish, got cozy.

David Hasselhoff made an appearance with girlfriend Hayley Roberts.

Brittany Snow posed in denim.

Alessandra Ambrosio looked gorgeous.

Carmen Electra had fun at Neon Carnival.

Ryan Phillippe rocked a hankerchief.

Julianne Hough rocked a flower crown.

Hannah Simone rocked a hat.

Kylie Jenner, Selena Gomez, and Kendall Jenner stayed close.

Alessandra Ambrosio got her dance on.

Camilla Belle was all smiles.

Julianne Hough showed off her festival look with a friend.

Miles Teller snapped a selfie.

Hilary Duff laughed while walking around.

Sarah Hyland and Matt Prokop stayed close.

Ashley Greene walked hand in hand with boyfriend Paul Khoury.

Kellan Lutz waved.

Jamie Chung sat poolside with Jesse Metcalfe and his fiancée, Cara Santana.

Emma Roberts had fun with chalk.

Amber Rose showed off her legs.

Aaron Paul had a big grin as the celebration started.

Ryan Kwanten looked dapper.

Dianna Agron laughed while eating a popsicle.

Whitney Port looked good in plaid.

Minnie Driver was all smiles.

Aaron Paul got his dance on.

Kylie and Kendall Jenner had fun with Selena Gomez.

Michelle Pfeiffer enjoyed the festival.

Katharine McPhee looked casual.

Kesha walked around the fest.

Rose McGowan snapped a selfie.

Ashley Madekwe rocked overalls.

Zoe Kravitz held hands with her boyfriend, Noah Becker.

Paul Wesley laughed with a friend.

Kelly Osbourne hung out with friends.

Claire Holt struck a pose.

Katharine McPhee jumped around with friends.

Leonardo DiCaprio hid, though he showed off his dancing skills at the festival.

Ireland Baldwin snapped a selfie.

Aaron Paul and Ashley Greene ate Cousins Maine Lobster rolls at the Abbot + Main Estate pool party. Source: Michael Kovac

Zoe Kravitz and her cousin, DJ Ruckus, met up at Nylon and Guess's Neon Carnival bash.