Billie Eilish’s coveted wardrobe often errs on the side of "effortlessly cool." By opting for laid-back separates designed with relaxed silhouettes, the singer-songwriter consistently masters the art of balancing fashion and function. So, it is no ...

I first met Billie at the Grammys this year. She had already achieved worldwide stardom, which might make some people have airs about them, but not Billie. She was so real and laid-back, even though her personality is so big.

Billie Eilish got on with Ariana Grande like a house on fire after a recent public appearance — and now they’re hanging out plenty and bonding over careers, fashion, romance and everything in between, a source exclusively reveals to Life & Style.