The 20-year-old songstress took to Twitter break the news to her fans and followers.
The "Crying in the Club" singer will open for Mars' North American leg of the tour
"So excited to be opening for @BRUNOMARS this summer! Every night I'm gonna be peering out from side stage trying to learn as much as I can.
"For years I've looked up to Bruno as a vocalist, musician, entertainer and artist, so... I'm geeked. Hope I can see you there this summer! 24kmagicworldtour https://bsmedia.business-standard.comwww.Camilacabello.Com," wrote Cabello in a series of tweets.