The Fashion Police co-host already denied the speculation last week, and yesterday she took to Twitter yet again to assure fans she's definitely not worried about her figure.
Kelly wrote: "Whomever started the rumour that I'm in 'fat rehab' what exactly is 'fat rehab'? Is it a 12-step programme? If so, what might they be? #SoFunny."
She'd previously tweeted on 3 April: "When did I all of a sudden gain 20lbs? I just asked my ass and she can't seem to remember either! #MustBeASlowNewsWeek! That was meant to be a joke, people. I have not gained 20lbs!"
Kelly has spoken in the past about battling with her weight, but revealed a svelte bikini body on the cover of US magazine Self last year.
She revealed she'd lost more than 70 pounds since 2009, adding: "I'm the most secure and content I've ever been. Though I'm still very self-deprecating: I look in the mirror sometimes and I feel like going back to bed. Everyone has good days, everyone has bad days.
"I call myself a former fat person, and when you're an FFP, you still see yourself as the person you used to be. That's something I'm genuinely working on all the time."
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