Donald Trump is never one to let a grudge go.

The million-dollar man is still fuming over a three-year-old snub from Rihanna, after the Barbadian beauty canceled a paid appearance at one of his clubs in Feb. 2011, saying she was under-the-weather and unable to perform. (Jennifer Hudson took her spot as a late replacement.)

The only issue was, she took the stage the very next day to perform in the NBA All-Star game, and the pipes sounded just fine! That infuriated the Donald at the time, and it still continues to rankle him in 2014, as the businessman complained to Howard Stern Tuesday about the "Umbrella" singer’s no-show.

Watch the video on Breaking Celebrity News:

youtube=https://www.youtube.com/watch?v=676plsuMsrM&w=420&h=315

“

She was going to sing for a big cancer institute, it was a big thing … the biggest people were there, the richest people were there, and guess what? She didn’t show up because she said she was sick, and the next day she was singing for a NBA game or something,” he recalled with a bitter tinge.

At the time, the "Di