Rita Ora joked that it was “casual Friday” as she dressed up for a walk through the streets of New York, wearing a gorgeous, plunging black halterneck gown.

The 25-year-old singer looked refined as she went bra-less in the gown, which cinched at the waist but billowed out into semi-transparent black fabric.

Rita Ora in New York City Rita Ora in New York (Rex/Shutterstock)

Rita smiled as she strolled down the street, avoiding getting her long skirt caught under her high heels.

She finished the look with her hair tied back with an elegant black blow, adding silver hoop earrings, light pink lipstick and winged eyeshadow.

Poking fun at herself for the high-fashion outfit, Rita captioned her Instagram shot: “Casual Friday’s”.

The British singer and former X Factor judge is over in the US to film America’s Next Top Model.