"Not only am I just not ready physically, I'm not ready to leave my baby behind since the doctors explained it's not healthy for her to be on the road," she said in her tweet. "Thank you Bruno for being so supportive and understanding."
Bruno Mars also posted a message on Twitter to Cardi about her decision to leave the tour.
"Most important thing is you and your family's health. I know the fans will understand," he wrote Cardi. "I also know we'll share the stage when the time is right. We love you Cardi and we will play Bodak Yellow every night in your honor."
RELATED CARDI B NEWS
» Cardi B and Offset cozy up as they take baby Kulture for doctor visit
» Cardi B, Offset welcome baby girl in Atlanta
» Cardi B becomes first female rapper to score two Billboard No. 1 hits
» Offset and Cardi B's 'intimate' texts hacked by website, lawsuit says