Las Vegas: Singer Demi Lovato has lashed out at North Carolina's anti-lesbian, gay, bisexual and transgender (LGBT) law through her performance at the Billboard Music Awards here. The 23-year-old singer used her performance at the awards gala held here on Sunday to silently stand up against North Carolina after it passed a rule two months ago that forces people to use the public bathroom of the gender listed on their birth certificate, reports femalefirst.co.uk. Lovato took to the stage to perform her track "Cool for the summer", which previously sparked speculation about her own sexuality because of its suggestive lyrics about experimentation, which she said she would "neither confirm nor deny". She donned a sequinned dress emblazoned with a gender-inclusive bathroom symbol. This isn't the first time Lovato has taken action against the American state's anti-LGBT "bathroom law", as she and Nick Jonas decided to axe their shows in Raleigh and Charlotte on their Future Now tour last month in protest over the Public Facilities Privacy and Security Act.