04/10/2013 02:09 EDT | Updated 04/10/2013 02:11 EDT

Coachella Music Festival: Celebrity Sunglasses Style (PHOTOS)

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INDIO, CA - APRIL 15: Rihanna performs with Calvin Harris during day 3 of the 2012 Coachella Music Festival at The Empire Polo Club on April 15, 2012 in Indio, California. (Photo by C Flanigan/FilmMagic)

Coachella –that little music festival which has exploded into a celebrity hippie heaven –begins on Friday for the first of two three-day weekends in Indio, California.

The festival, which attracts A-list music stars such as Beyonce, Rihanna and even a Tupac hologram, is known for its groundbreaking shows but it's also a great place for celeb-watching.

From '60s flower child-inspired outfits (see "Spring Breakers'" Vanessa Hudgens in a crochet crop top) to risqué frocks (see Katy Perry's vintage sheer dress), the festival is like Halloween for celebs where they can wear their wildest looks.

While we love browsing through the hip styles, we can't help but stare at the quirky sunnies that the celebs wear.

Solange Knowles got us excited with her disco-inspired headgear at the 2012 festival and Emma Roberts channeled John Lennon with her round glasses.

Check out our favourite celeb sunglasses at Coachellas past:

Coachella Sunglasses Style

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Coachella 2012 Style