Kristen Stewart is having a rough summer ... her mom has now filed for divorce.

In fact, Kristen Stewart isn't the only member of her family experiencing relationship crises.

Jules Stewart filed the divorce petition on August 17 in L.A. County Superior Court.  Jules, who married John Stewart 27 years ago, cites irreconcilable differences.

Jules filed the divorce docs herself, without using a lawyer.

 

As for the date of separation, Jules says she and her hubby have been estranged since June 15, 2010.

Both parents work in film production. Jules is a writer/director. John is a Fox TV producer and stage manager.

News of the couple's split comes a little more than a month after it was revealed that Kristen, 22, cheated on longtime boyfriend Robert Pattinson with her Snow White and the Huntsman director, Rupert Sanders.

So far ... no comment from Kristen.

沪江娱乐快讯：继电影《暮光之城》的男女主角感情危机曝光之后，女主角斯图尔特的母亲Jules和父亲John的婚姻危机也被曝光。斯图尔特的父亲John是美国Fox电视台的节目制作人和舞台监督，母亲Jules是一名剧本监督员及编剧，两人在二十七年前结婚，但在2010年时彼此的关系就已破裂。近日，她的母亲Jules向洛杉矶县高等法院提交了离婚申请。