Leona Lewis continued her walk on the edgier side of fashion last night in a winged-style black Stella McCartney dress.

The former X Factor winner squeezed her newly svelte figure into the ensemble at a party hosted by the Spanish edition of Harper's Bazaar magazine.

But the 24-year-old singer's outfit, complete with wings attached to her back, had something of a Bat-woman ring about it.

Unflappable: Leona Lewis at a party last night hosted by the Spanish edition of Harper's Bazaar magazine at the El Casino de Madrid

Batty: The singer's Stella McCartney dress had a Bat-Woman ring to it

Futuristic: Leona at the Brits on Tuesday

The Bleeding Love singer completed her high fashion style by wearing lashings of lipstick with her hair scraped back and fashioned into a bun.

Her out-there look follows the futuristic creation she wore to the Brits on Tuesday - a William Tempest silver asymmetric dress.

And judging by her latest choices of attire, it seems Leona is attempting to leave behind the girl-next-door and push at the fashion boundaries.

Last night's even was held at the historic El Casino de Madrid in Spain, which was declared a Monument of Cultural Interest in 1993.

Earlier this week Leona lost out to Lily Allen in the Best Female Solo Artist category.

But despite missing out, the singer earlier told MailOnline on the red carpet that she wasn't hopeful of winning anyway.

She said: 'I'm excited and really looking forward to seeing Jay-Z. I'm up against some really strong girls and I can't call who is going to win.

'The other girls are amazing and we are all deserving.'