Actor Blair Underwood and his wife, Desiree DaCosta, have announced they're ending their marriage after 27 years.In a joint statement posted to Instagram, the couple called their marriage “a beautiful journey" and praised their three children, ages 24, 22 and 19.“After a tremendous amount of thought, prayer & work on ourselves individually & collectively, we have come to the conclusion to end our marriage that began 27 years ago,” the statement said.It continued: “Our proudest achievements are