Ronda Rousey Has To Prove Herself

YOU'RE GOIN' DOWN, RONDA

Charlotte Flair is putting Ronda Rousey on notice ... telling TMZ Sports the former UFC superstar is in for a rude awakening when she steps inside of the squared circle with her at WrestleMania 38 in Texas.

We spoke with the WWE Smackdown Women's Champion -- and daughter of legend Ric Flair -- out in NYC this week ... and she tells us the damage she caused to Ronda on Smackdown is a preview of what the former MMA star can expect when they collide.

Charlotte and Ronda came to blows in the leadup to WrestleMania ... with Charlotte getting the best of Rousey in front of her hometown crowd in Charlotte, North Carolina.

In the aftermath of their fight, Ronda said she was…