And last night at the SAG Awards the British star appeared to totally put the rumours to bed by turning up RINGLESS on the red carpet.
All eyes were on Miss Kelly O's wedding finger as she took to the red carpet for the glitzy Screen Actors Guild Awards.
But the 28-year-old left that digit empty - wearing a massive cocktail ring on her middle finger instead.
The TV presenter looked divine in a floor-length black dress, with sheer panelling across the chest and sequined detail.
She accessorised with a strong splash of pillarbox red lippy and a simple bejewelled clutch, with her trademark purple hair swept back in a vintage ensemble.
Just last week American magazine US Weekly reported that Kelly was "really excited" about getting married to her vegan pastry chef beau a few weeks before Christmas.
A source told them: "Kelly is the happiest she's ever been. Her career is going well, and she's in a healthy relationship with a wonderful guy."
But Ozzy Osbourne's daughter looked to have denied the claims by writing on her Twitter page: "DontBelieveEverythingYouRead".
[Related story: Kelly Osbourne and Anne Hathaway look gorge in black]
[Related story: Mum Sharon Osbourne on Kelly Osbourne's engagement reports]