X Factor back in 2008 looked nothing like the young girl who boasted iconic "bird nest" styled hair that we all remember.In fact, the singer is all grown up and looking hotter than ever as she headed out in London's Mayfair at the weekend.Dressing to thrill, she rocked an attention grabbing white coordinated blazer that was purposefully left undone to show off her ample cleavage.The hitmaker ditched her bra as she unveiled lots of bare flesh in the jacket that gaped open.Diana teamed her looked with some killer chunky leather lace up boots, a designer silver over-the-shoulder handbag and a dark pair of cool shades.Adding further accessories to her already glam outfit, she popped on a flimsy silver chain and droplet earrings to complete her look.Her highlighted blonde locks were groomed into a sleek and straight style as the Kinky Boots Westend star flashed a smile as she walked through London's Mayfair.While her outfit appeared to be quick daring, Diana didn't seem to be too bothered about the risk of a wardrobe slip.Meanwhile, Diana, who found fame on Simon Cowell's singing scouting show the X Factor, unveiled that she'd suffered a mystery illness.In February, she left fans worried for her health as she took to social media revealing she was in chronic pain and unable to eat but her condition had still gone undiagnosed.
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