CNN reports that Chris Pratt and Katherine Schwarzenegger are tying the knot.<br />The "Guardians of the Galaxy" star announced the big news via Instagram early Monday.<br />"Sweet Katherine, so happy you said yes! I'm thrilled to be marrying you. Proud to live boldly in faith with you. Here we go!"<br />29-year old Schwarzenegger and 39-year-old Pratt have been dating for several months.<br />Katherine Schwarzenegger is the daughter of actor and former California governor Arnold Schwarzenegger and Maria Shriver. <br />
