Britney Spears Reacts to Sister Jamie Lynn’s Emotional Book Interview, Jamie Lynn Responds

Britney Spears slams her sister, Jamie Lynn Spears, on Twitter on Thursday, following Jamie Lynn’s emotional interview with ‘Good Morning America’ to promote her book, ‘Things I Should Have Said,’ on Wednesday. Following the 40-year-old pop star’s tweet, the 30-year-old former Nickelodeon star responded on Instagram with a lengthy message.