Cooper was soon alerted to his mistake by her many fans and he went on to delete the tweet, before posting an apology.
"I deleted this tweet after I found out the pic wasn’t Sanders but rather an actress w/ a huge fan base (who now all HATE me, lol)," Cooper tweeted, along with a screen shot of the tweet he had just deleted. "My bad!"
Cooper added, "My advice: Just because a Google search identifies an image as being a certain person, take that with a grain of salt! It could be wrong."