The 21-year-old hooper has been on top of the world ever since the Tigers beat Iowa to win the national championship in April ... securing huge opportunities like posing in the Sports Illustrated Swimsuit issue and raking in millions of dollars through endorsement deals.

Now, Reese can add yet another accomplishment to her list -- starring alongside Latto and Cardi in their visuals for the song, "Put It On Da Floor Again" ... which dropped Thursday night.

Reese makes several appearances during the grocery store scenes in the 3-minute video ... pushing Latto in a shopping cart and holding up a makeshift hoop as the Atlanta M.C. dunked a stuffed heart.

But the biggest highlight comes during Cardi's verse ... when she raps "I been ballin' so damn hard, coulda went to LSU" as the camera cuts to a mean-mugging Reese.

Reese tweeted about the cameo ... saying, "i told y’all i wanted to be a video vixen😭"

It's not the only LSU/Latto connection -- Reese's Flau'jae Johnson also dropped her own cover of the same song last month.