Cardi B Announces She Will Not Tour With Bruno Mars

Says she underestimated the whole mommy thing

Well, looks like Cardi B has learned the first lesson of parenthood -- it's tough!

The new mom, with Migos hubby Offset, took to Instagram to let fans know that she will not be hitting the road with Bruno Mars this fall. Citing both her doctor's advice and her own physical ability to be on tour, the "I Like It" rapper posted this: