The 25-year-old 'Price Tag' hitmaker, who has an irregular heartbeat and suffered a stroke aged 18, likened herself to the croaky 'Simpsons' character, reported Contactmusic.
In a post on her Instagram page, she wrote, "My voice has decided to be friends with the air con today and dry out to Marge Simpson vibes!
But Jessie, who recently quit her judging position on talent show 'The Voice', reassured her fans she knows exactly how to get her vocals back in tip top condition.