Music festivals and edgy beauty looks go hand in hand, and at the iHeartRadio Music Festival in Las Vegas, the rock-star-chic factor has been turned up to 11. Katy Perry  was spotted in twisted double topknots (reminiscent of Miley Cyrus's infamous VMAs coif ) prior to and during her performance, while Avril Lavigne  wasn't afraid of a little red and gold face paint. Take a look at who's in the Nevada desert doing their edgy-beauty finest.
Britney Spears  donned ultralong blond hair and shimmery shadow for a festival-perfect look that certainly had heads turning.
Miley Cyrus  let out a good cry (and we don't blame her) while singing at the festival. Waterproof mascara: who needs it?
Khloé Kardashian knows the trends: the reality star paired her ombré strands with a faux-undercut braid on the side.
Lucy Hale went for a classic beauty look on the iHeartRadio red carpet. The young star opted for ruby-red lipstick, soft waves, and gorgeously groomed eyebrows.
Ke$ha showed off multiple tattoos and a platinum blond mane as she performed at the iHeartRadio Music Festival.
With her red shadow, gold face paint, and faux-undercut braids, performer Avril Lavigne  was the epitome of cool at the iHeartRadio Music Festival.
Lots of dark eyeliner and mascara made Aubrey O'Day's edgy beauty look complete.
Kat Graham accentuated her cute bob with perfectly groomed eyebrows and neutral-toned makeup.
Kat Graham opted for almond-shaped nails at an iHeartRadio Music Festival press event.
There's nothing like dark, heavily lined eyes to show off your rocker style. Isn't that so, Shay Mitchell?
Kourtney Kardashian paired her peachy cheek and lip hue with an on-trend, deep side sweep.
With her dark blush, bold lips, and shimmery smoky eyes, Katie Cassidy went all out in the makeup department.
Katy Perry  topped her look off with black nail polish and her signature  flirty lashes.
Kelly Rowland stuck with a coordinating makeup palette of purples and pinks at the iHeartRadio Music Festival.
Whenever an edgy feel is needed, a red lipstick will get you there, as Kate Hudson  proved.
While the blond hair isn't new, Ashley Greene  showed off a much longer style at the iHeartRadio Music Festival in Las Vegas.
With her double topknots, reptilian necklace, and brick-red lipstick, Katy Perry  made a bold statement on the iHeartRadio Music Festival red carpet.
Chilli and T-Boz of TLC fame each chose a feature to accent: Chilli played up her smile with a bright reddish-pink lip hue, while T-Boz accented her eyes with a rich purple shadow.