Jessie J just turned 33 on March 27, and she decided to celebrate the big day with a naked Instagram selfie, as one does. The "Flashlight" songstress followed up her birthday post up with some new workout videos in her Instagram Story. She also opened up to Women’s Health UK about her commitment to working out. Korin Miller Korin Miller is a freelance writer specializing in general wellness, sexual health and relationships, and lifestyle trends, with work appearing in Men’s Health, Women’s Health, Self, Glamour, and more. This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses.