Billie Eilish views her fans as "old friends".

The 22-year-old singer thinks it is "cool" she has grown up alongside her supporters and feels happy when she sees the same familiar faces in her audiences that have been there since she started her career.

She said on 'Jimmy Kimmel Live': “What’s been so cool is that all of these fans, all of my little family, we’ve been growing up at the same time.

“So many kids, especially in L.A. because I’m from here and I’m around and stuff, when I was first starting out there would be certain kids that I would see at everything I would do, and we were all the same age.”

“So they would come to stuff and I would see them multiple times a year and then not for a couple years, and then I’d see them again. Over the years I’ve seen the same faces multiple times, and it feels like seeing my old friends again.”

The 'Lunch' singer previously revealed she has lost a lot of friends since she became famous.

She said on the BBC podcast 'Miss Me?' with hosts Lily Allen and Miquita Oliver: “Well I lost all of my friends when I got famous.

"I suddenly was famous and I couldn’t relate to anybody. It was tough. It was really hard.”

Luckily, she is still close with her best friend, Zoe, and her staff members that are friends.

She added: "And then it was my 20th birthday and I remember looking around the room and it was only people that I employ. And all 15 years or more older than me."

However, one of her employees quit and never spoke to her again.

She recalled: "And it was the worst thing that happened to me. And that made me realise like ‘oh wait, this is a job.'

"If they left me, they would never see me again."