updated 12/28/2010 AT 2:00 PM ET
•originally published 12/28/2010 AT 3:05 PM ET
“This is such BS!!!! Lol, you people all report BS,” the singer Tweeted Tuesday after Internet rumors that she’s expecting with fiancé Eddie Cibrian surfaced.
As if to punctuate her denial, just a few minutes later Rimes wrote about her desire to party – with liquor – during her upcoming trip to Cabo San Lucas, Mexico.
“Cabo!!!!! Sun, bikinis, friends, food, tequila…celebration!!!! Gonna be the best trip!!” she Tweeted.
Rimes accepted Cibrian’s marriage proposal over Christmas, which came with a 5-carat oval diamond set in rose gold fleur-de-lis connected to the band.