Billie Eilish looks every inch the rock chick as she poses in a Gorillaz T-shirt after band's frontman Damon Albarn described her as 'exceptional'

Singer Billie Eilish shared an Instagram Story of herself making faces in a Gorillaz T-shirt on Wednesday. 

The star, 20, poked her tongue out as she larked around while wearing a back-to-front baseball cap. 

The video comes three months after Gorillaz frontman Damon Albarn, 54, praised the singer, describing her as 'exceptional.'  

Damon told Los Angeles Times why he is such a fan of Billie. 

He said: 'A really interesting songwriter is Billie Eilish and her brother. 

'I’m more attracted to that than to Taylor Swift. It’s just darker — less endlessly upbeat. Way more minor and odd. I think she’s exceptional.'

The snaps come after she joined forces with Nike to release a brand new pair of Air Force 1s and line of apparel earlier in the week. 

Billie announced the collaboration in a video posted to her Instagram account on Monday, where she showcased the new 'reimagined' sneakers and line of attire.

She wrote: 'So excited to announce my new @nike air force 1 and apparel collection,' 

'It was an honor to reimagine the originals while making them my own & I can’t WAIT for them to be yours. 

'The collection launches April 24 on store.billieeilish.com and April 25th on the Nike SNKRS app.'

The video showed Billie lounging about her house and outside in a range of neutral apparel which were designed with the iconic Nike swoosh.

Her new Air Force 1s, called 'Mushroom' and priced at $170, were a pair of off-white sneakers with an array of velcro straps fastened over the show laces. 

The shoes were designed with 'sustainability in mind', according to a description of the trainers on Nike's website.

'As a young, modern creative, Billie Eilish loves and respects the classics — including sneaker icons like the Air Force 1. For her own Air Force 1, she remixed the classic by choosing environmentally preferred materials.

 'The Nike Grind midsole blends in with the tonal mushroom-colored upper, which itself is made with a synthetic nubuck material made from post-consumer recycled content for a super soft look and feel — all designed with sustainability in mind. Capturing Billie’s signature oversized style, five chunky mid-foot straps — inspired by the Alpha Force Low and Air Trainer 3 — cover the laces, giving the silhouette a unique and bold look,' the description reads.

This is not Billie's first collaboration with Nike. 

Last year, she teamed up with Nike to release two pairs of sneakers - a lime green pair of Air Jordan 1s and a taupe pair of Air Jordan 15s. 

Billie's collection will be released April 24 on her website and on the Nike SNKRS app on April 25.