Guess ‘Life After’ didn’t help matters in reuniting one of the greatest sit-com families of all time.

The woman who played the original Aunt Viv on “Fresh Prince of Bel Air” says there’s a damn good reason she wasn’t at a recent reunion dinner with the rest of the Banks family — she HATES Will Smith.

15 years after the show went off the air … Janet Hubert tells TMZ, she’s still upset with the way she was fired from the show … and blames the whole thing on Smith himself.

“There will never be a reunion … as I will never do anything with an a**hole like Will Smith,” Hubert said.

She adds, “He is still an egomaniac and has not grown up. This constant reunion thing will never ever happen in my lifetime unless there is an apology, which he doesn’t know the word.”

[via TMZ]