LeAnn Rimes showed off her diamond engagement ring Tuesday morning--just one day after announcing her engagement--at Los Angeles International Airport, where she and fiance Eddie Cibrian were preparing to depart for Cabo San Lucas, Mexico.

The ring is reportedly a platinum sparkler with a 5-carat oval diamond set in rose gold fleur-de-lis.
LeAnn made no secret of their destination, Tweeting, "Cabo!!!!! Sun, bikinis, friends, food, tequila...celebration!!!! Gonna be the best trip!!