The Kardashian girls sure are busy these days in the romance department. As sister Kourtney is expecting her first child, younger sister Khloe is getting married this weekend to NBA star Lamar Odom after only dating him for a month.

Multiple PEOPLE sources confirm that the new couple is rushing to get married, and that guests are being invited by phone since invitations may not get to them in time. E! was the first to report the wedding news.