LeAnn Rimes & Eddie Cibrian: Cabo Celebration!

LeAnn Rimes and Eddie Cibrian catch a flight out of LAX on Tuesday (December 28) in Los Angeles.

The newly engaged couple headed to Cabo San Lucas, Mexico, for “sun, bikinis, friends, food, tequila … celebration!!!! Gonna be the best trip!!” the 28-year-old singer tweeted.

At the airport, LeAnn flashed her engagement ring – a platinum sparkler with a 5-carat oval diamond set in rose gold fleur-de-lis connected to the band.

“Once again, thank you all for your kindness and for sharing in our happiness. We are off to sweet dream land. Til tmrw twele’s love you all!” LeAnn wrote in another tweet.

Eddie, 37, also gushed about the good news, tweeting, “It has been an unbelievable Christmas here! I truly hope it has been the same for all of you. Can’t wait to see what 2011 will bring…”

10+ pictures inside of LeAnn Rimes and Eddie Cibrian at LAX…