<br /> An 89-year-old Roman Catholic nun who has battled pop star Katy Perry for years over the sale of a Los Angeles convent collapsed and died during a court appearance, according to media reports and supporters.<br />Sister Catherine Rose Holzman is one of two aging nuns who were fighting the sale of the 8-acre convent. Fox affiliate KTTV reported, she died on Friday during related legal proceedings in Los Angeles County Court.<br />Holzman had earlier told KTTV as she entered the courthouse with Sister Rita Callanan, “To Katy Perry, please stop. It’s not doing anyone any good except hurting a lot of people." <br />
