Copy Marina and the Diamonds' Easy, Girlie Festival Hair Bow

"There was one in my hometown, which was very small, called Abergavenny that's in South Wales," she said of her first introduction to the brand. "It was actually our only cosmetics store, so that's where I used to go get my makeup." She loves the Boots Botanics collection and notes the clear mascara and natural lip balm as her favorite products.

The star likes to look into the past to pull makeup inspiration — she's particularly partial to the '70s. "I enjoy referencing old looks but updating them in a modern way," she explained. "For example, I will team a neon flicker eyeliner or a neon eye shadow with very natural, voluminous '70s hair."

When it comes to creating a cat eye, she opts for Alexa Chung's chosen liner — the Eyeko Eye Do Lash Enhancing Liquid Eyeliner ($19). "You have to look at the shape of your eye and follow that to achieve a cat eye that's actually going to look good on you," she advised.

To cleanse her skin between performances, Marina relies on the Peter Thomas Roth Pumpkin Enzyme Mask ($58) twice a week. "It’s like a resurfacer," she enthused.

She also makes sure to take off her makeup every night and follows with argan oil in the morning. "I don't moisturize at night. I only moisturize in the morning," she said. "It's not good to moisturize at night because that's the only time your skin has a proper chance to breathe without being exposed to dirt and pollution."

When it comes to rocking a red lip, Marina opts for Lime Crime Velvetine Matte Lipstick ($20). "It's called a cream lip stain, and it's absolutely incredible," she gushed. "It's the best red lip I've ever found. Red lips can come off and look messy, and this is the only one that I've found that actually stays put."

When it comes to attending music festivals, Marina recommends keeping it simple with a lot of sunscreen and a matte red lip. But she takes more chances with her hair.

"I did a shoot the other day in London, and we were using like neon ribbons tied in our hair," she said. "So, it's not like a bow or anything. You just tie it around a strand of hair and leave some of it trailing — and it looks really good! So that's what I'm going to be doing."

To complement the accessory, she suggests a natural beach wave.

When asked who inspires her beauty look, Marina cited Liz Taylor. "I can identify with her," she explained. "She's brunette, and she's very curvy."

According to Marina, the face of beauty is changing and becoming more accepting. "Makeup brands aren't afraid to show variety, so it's not just one person's [vision of] beauty," she theorized. "But they show crossover sections, so whether you're 16 or 60, you can still be considered attractive, interesting, and beautiful. We're in quite a healthy spot in terms of progressing that way."

Here's a shot of her performing at Duane Reade in NYC on March 24, 2015.