Bruno Mars Replacing Cardi B with Ciara, Boyz II Men, Ella Mai and Ch

Play video content THE REPLACEMENTS

Cardi B's a tough act to follow ... according to Bruno Mars, who just announced he's replacing her spot on his tour with a slew of artists ... including Ciara.

Bruno played the role of hype man -- in a BIG way -- when he finally revealed who's stepping into Cardi's role on the 24K Magic Tour. In addition to Ciara, he's bringing Boyz II Men, Ella Mai ... as well as R&B legend Charlie Wilson (aka Uncle Charlie).

As you know, Cardi pulled out of her opening spot last month on Bruno's upcoming tour, saying it would be too much of a physical and emotional strain so soon after giving birth to Kulture.

The tour kicks off next month in Denver.

And Bruno ... maybe one less cup of coffee??

Bruno Mars Performance Photos Gallery Launch Gallery Getty

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