Divorce lawyer Laura Wasser filed the papers according to both outlets. TMZ reports Kardashian is seeking joint custody of their four children -- North, Saint, Chicago and Psalm West, ages 7, 5, 3 and 1 -- and both are abiding by a prenuptial agreement.
West proposed to Kardashian on Oct. 21, 2013 at AT&T Park in in San Francisco after dating since 2012. He hired a 50 piece orchestra and beamed the message "PLEEEASE MARRY MEEE!!!" on the Jumbotron.
They married in May 2014 in a secret ceremony at Forte di Belvedere in Florence, Italy. The couple already made headlines for West's rap music career and Kardashian's reality TV and entrepreneurship celebrity. Kardashian also began legal aid work to help free Death Row inmates.