Cardi b announces new collaboration with bruno mars

I'm not aware of any official announcement from Cardi B or Bruno Mars about a new collaboration. However, I can tell you that both artists have been working on new music and have been teasing their fans with snippets and hints about upcoming projects.

Cardi B has been busy promoting her new album "Twinning" and has released several singles, including "Up" and "Bartier Cardi". She has also been touring and performing at various music festivals.

Bruno Mars has been working on new music as well, and has been teasing his fans with snippets of new songs on social media. He has also been touring and performing at various music festivals.

While there hasn't been an official announcement about a collaboration between the two artists, it's possible that they may work together on a song or project in the future.