The Insider.com

Rihanna haters take a number!

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Hot off the heels of everyone from KISS's Gene Simmons (who called her music "bullsh*t") to her own father (who called her "fat") dissing the pop superstar, Clay Aiken has jumped on the bandwagon, going so far as to question her singing abilities on last night's Watch What Happens Live with Andy Cohen.

When Cohen asked him which pop singer today wouldn't make it past the first round of auditions on American Idol, Clay carefully thought out the answer before settling on RiRi.

Should Rihanna Rewatch Her 20/20 Interview?

"Rihanna has some pitch problems for sure," he said.

Ouch.

But to be fair, Rihanna hasn't exactly been laying low as of late -- it's safe to say that all the hate probably stems from all of her recent attention-getting antics. You can only get away with so many bra-less, pants-less outfits and mean girl style Twitter rants before people start turning on you.

Rihanna's PR Nightmare

And could all of this also be backlash from hooking back up (musically at the very least) with ex-boyfriend and all around jerk Chris Brown?

Because it looks to me like her public persona started going downhill from there … fast.