11:07 AM PT -- A rep for Gladys Knight sent us a statement from the legendary musician on the name flub ... and like we thought when we read Dionne's tweet, she isn't mad.
"Dionne and I have been sisters for a long time and I hope she is as honored to be mistaken for me as I would be her. I’m sure it was an honest mistake. It was a blessing to be in the house to see Serena’s greatness."
9:53 AM PT -- Clearly, Dionne isn't sweating the mix-up, tweeting, "Hi, I'm Gladys Knight ... and instead of taking that midnight train to Georgia, I won't walk on by but will say a little prayer for you."
WhileSerena Williams continued to shock the world with her incredible play at the U.S. Open, TV announcers showed celebs who came out to support the G.O.A.T., including Dionne Warwick -- the only problem -- broadcasters mistook her for Gladys Knight.
And, it was just as cringe as it sounds.
Mary Carillo and Chanda Rubin were behind the mic for ESPN ... when during the third game of the first set, two women appeared on screen between points.
Chanda: Got some more stars ... Mary: Gladys Knight ... Chanda: Gladys Knight ... Mary: Hello!
The problem ... it wasn't Knight, but 5-time Grammy Award winner and fellow legend, Dionne Warwick. In fairness, Gladys was in the building, too.
Shortly after the match, Chanda went to social media to explain what happened during the flub.
"Too bad I was initially looking at the court (where Auntie Gladys was in the stands) and not our program monitor that showed Ms. Dionne... mistake was immediately corrected.🤦🏽♀️," the former player-turned-broadcaster clarified.
It wasn't the first time a star has been mistaken for another celeb during this year's U.S. Open. During Serena's first-round match, a short video posted online went viral after the poster confused actress and advocate Laverne Cox for Beyonce.