The 43rd annual ACM Awards show was treated to a medley of songs by the legendary Garth Brooks. His fellow superstar wife Trisha Yearwood joined Brooks on stage for their hit, 'In Another's Eyes.' Her gorgeous, lowcut gown must have left him a little stunned, because just after the duet, Brooks suffered a little slip of the tongue, referring to show host Reba McEntire as "Miss Yearwood." (oops!)