Britney Spears seems to treat her Instagram like a diary — except her shocking statements only further fuel concerns about her mental health and overall well-being. On Monday, May 20, the Princess of Pop took to the social media app with a video from earlier this month of the 42-year-old showing off a see-through, floor-length dress. “This is weirdly enough the day before I broke my foot!!!” Spears expressed in the caption of the since-deleted post, referring to the injury she suffered after trying to do a “leap” in the living room of her hotel suite at Chateau Marmont. During her stay at the …