Rita Ora puts on quirky display in loose shirt and tie-dye trousers

She's preparing for her European tour, which is set to kick off on April 23 in Oslo.

And Rita Ora was rocking a casual look when she arrived at Heathrow airport in London on Sunday, looking cool and quirky as ever in a low-key look.

The singer, 28, was dressed down for her flight to Norway as she prepared for a whirlwind tour of Europe, promoting her long-awaited second album, Phoenix.

Keeping it casual: Rita Ora was rocking a casual look when she arrived at Heathrow airport in London on Sunday, looking cool and quirky as ever in a low-key look

Keeping it casual: Rita Ora was rocking a casual look when she arrived at Heathrow airport in London on Sunday, looking cool and quirky as ever in a low-key look

Rita showed off her flair for fashion in an oversized red striped shirt, worn layered over a lace bra.

She opted for comfort in a pair of baggy tie-dye trousers, carrying a matching hoodie over one arm.

The blonde beauty completed her travelling get-up with trainers and a baseball cap, while accessorising with layered gold necklaces.

On the road: The singer, 28, was dressed down for her flight to Norway as she prepared for a whirlwind tour of Europe

On the road: The singer, 28, was dressed down for her flight to Norway as she prepared for a whirlwind tour of Europe

Layering up: She opted for comfort in a pair of baggy tie-dye trousers, carrying a matching hoodie over one arm

Layering up: She opted for comfort in a pair of baggy tie-dye trousers, carrying a matching hoodie over one arm

Cool and casual: Rita showed off her flair for fashion in an oversized red striped shirt, worn layered over a lace bra

Keeping it simple: She wore her blonde locks pulled aback in a messy bun

Cool and casual: Rita showed off her flair for fashion in an oversized red striped shirt, worn layered over a lace bra

The star was also toting a leather jacket to keep warm during her plane trip. 

Last week, Rita looked every inch the siren as she shared two sizzling snaps on social media.

The star slipped her showstopping curves into a one shoulder black catsuit with cut-out detail in the smouldering Instagram post.

Dazzling: Last week, Rita looked every inch the siren as she shared two sizzling snaps on social media

Dazzling: Last week, Rita looked every inch the siren as she shared two sizzling snaps on social media

Ensuring she set pulses racing, the Fifty Shades Freed actress posed seductively as she showcased her dramatic make-up that framed her eyes with glitter, jewels and bubblegum pink shadow. 

Rita's platinum blonde locks were styled in corkscrew curls that

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