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Coachella Music Festival, Kendall Jenner, Kylie Jenner

AKM-GSI

The 2015 Coachella Valley Music and Arts Festival is underway in Indio, California and you know what that means—celebs get to show their best summer festival fashions!

On Friday, day 1 of weekend 1, which saw performances from the likes of AC/DC, Azealia Banks and Alabama ShakesKendall Jenner, 19, was seen wearing an outfit almost matched 17-year-old sister Kylie Jenner's new look, her recent return to blue hair.

The 19-year-old model wore ripped bright blue jeans shorts that ended just above her knees, paired with a bikini top and tan vest as well as several Dylanlex necklaces and bracelets. Kylie, who matched her locks to her nails, sported a cream romper and ankle-length white vest.

Another celeb festival attendee, Justin Bieber, was spotted that day getting a little handsy with Kendall, as seen in photos he posted on Instagram, which shows her wearing a different bikini top. Hours later, around 1 a.m., Justin was spotted with Kylie at an after party at Beacher's Madhouse. They were also seen separately at another after party, Nylon magazine's Midnight Garden bash.

And what festival would be complete without fan favorite Fergie? The singer showed skin in a black cut-out top and blue daisy dukes, paired with a long, tan, fringed vest and matching booties and a whole lotta scarves tied around her neck and waist.

Coachella Music Festival, Fergie

AKM-GSI

Hailey Baldwin, another attendee, was Kendall's road trip buddy (and also recently goofed around with Bieber in a Walmart) and also sported her own pair of short short denim.

Day 1! Wearing @wildfoxcouture #IndioPony ??

A photo posted by Hailey Baldwin (@haileybaldwin) on

Bella Thorne was seen at the festival wearing a white, floral maxi dress. She and Patrick Schwarzenegger, who also attended, recently had dinner together, which raised eyebrows, as he's dating Miley Cyrus. Thorne said she and Arnold Schwarzenegger's son are just friends.

Coachella Music Festival, Bella Thorne

Michael Kovac/Getty Images for H&M

Check out more photos of celebs at the Coachella festival below!