Billie Eilish uses fragrance for comfort when life feels "unfamiliar and scary"

She told America's Cosmopolitan magazine: "Honestly, the scents I'm smelling affect me a lot. I feel like a different person based on what I'm smelling. Sometimes a familiar scent feels comfortable and grounding.

"When life gets unfamiliar and scary, I rely on a scent that puts me at ease. When I feel uncomfortable or unsettled, I don't want to try a new perfume.

"If it smells too different from my life, it freaks me out. I love going back to things that make me feel grounded and like myself. Scent can be a big part of that."

Billie also credits having her friends around her and regular workouts for helping her maintain calm in her life.

She said: "I think being around my friends and having people around me who are normal, wonderful, and whom I love spending time with helps.

"I exercise a lot. Going to the gym makes me feel very in my body, which is nice."

The What Was I Made For? hitmaker has just released her fifth fragrance, Your Turn II, and all of her scents are gender neutral, which she admitted felt "natural" because she has never been particularly drawn to "the women's version" of things.

She said: "Honestly, I didn't think much about it. It feels natural to want everyone to wear things. I've spent my life not wanting to wear the women's version of something because it wasn't my style.

"I wanted men's shoes, and sometimes the women's version would be pink with extra details I didn't want. I've always wanted everyone to enjoy what I create without feeling left out.

"Naturally, the things I'm drawn to are more genderless. With scent especially, I don't wear very feminine scents because they don't match how I feel or how I want to be portrayed.