At Glamour UK’s Women of the Year Awards on Tuesday, gone were the signature stick-straight hair and thigh-grazing dresses once preferred by pop singer Jessie J. Perhaps in honor of the occasion, Jessie embraced her glamorous side, working a screen siren look in a sequined Dolce & Gabbana dress topped with a knockout Mawi tube necklace. Her beribboned bauble dripped in black crystals and linked together with the brand’s signature gold tubes. Having been spotted on stylish gals including Olivia Palermo and Dannii Minogue, we’re sure to see more from Mawi’s gemtastic Fall 2011 collection soon!