Jennifer Hudson lost nearly 80 pounds to date and she is now temporarily trading in her microphone for a pen as she writes a yet-to-be titled weight loss memoir due to be released in January 2012. The tell-all book will document the singer’s incredible slim down which brought her from a size 16 to a size 6. According to the company publishing her book, Hudson wants to inspire anyone coping with weight issues, share some of her own best tips for losing and maintaining weight loss, fitting in exercise and keeping it fun and much more. Hudson is a spokeswoman for weight loss giant Weight Watchers.