Demi Lovato turned 26 on Monday (local time) and twitterverse showered the American singer with all the love. Maria Canals-Barrera, posted a photo with the singer and tweeted, "She is a light, a fighter and a winner. #StayStrong". American singer Demi Lovato recently went through a rough phase following an incident of drug overdose. She was immediately rushed to the hospital after she was found unresponsive at her Hollywood Hills home last month due to an apparent drug overdose. Lovato released her first studio album 'Don't Forget' in 2008 and there was no looking back after that. The 'Sorry not Sorry' singer has won many prestigious awards, including MTV Video Music Awards, People's choice, Billboard Women in Music award and 14 Teen Choice award. She even bagged a Grammy Award nomination.