Ronda Rousey was sporting a brand new accessory in New York on Wednesday -- a full cast one her right hand ... essentially confirming reports she broke it during Wrestlemania 35.
The former UFC star was trying to cover up the black cast as she walked into a taping of "The Late Show with Stephen Colbert" ... but you couldn't miss it.
The 32-year-old's hand was "severely broken" in the April 7th match with Becky Lynch and Charlotte Flair," according to Dave Meltzer ... and there are reports she underwent surgery on Tuesday.