Cardi B Dances Salsa in Dominican Republic Before Austin City Limits

Cardi B is a master multitasker — flying down to the Dominican Republic for some salsa dancing with her fam … all before a big show she’s got in Texas a few hours from now.

The rapper was down in the D.R. Saturday — Cardi’s part Dominican herself, BTW — with her sister, Hennessy, and some pals while they visited family and stuck around for a big get-together later in the night … her grandmother’s 80th birthday party, no less.

We got this video of Cardi doing her thing on the dance floor … where she was cutting it up with the help of a DR legend — accordionist and singer Fefita la Grande, who was handling stage duty for the night as Cardi and co. salsa danced the night away.

Speaking of that … check out CB’s Spanish-style moves here, it’s pretty much all booty from what we can see. Getting in touch with one’s roots never looked so good, right?

Hopefully, she got some rest — we’re told she left around 2 AM, FWIW — ’cause Cardi has another fiesta to attend to with a relatively quick turnaround. She’s headlining the Austin City Limits Festival Sunday, and obviously … people are banking on her to show up.