Kelly Osbourne hangs up on her Mum live on TV Kelly Osbourne Wed-06-Jun-12 17:47 Share this KELLY OSBOURNE hung up on her mother Sharon on Tuesday after THE TALK co-host called her daughter live on-air and quizzed her about rumors of an engagement. The Papa Don't Preach singer sparked reports she was taking her relationship with vegan chef Matthew Mosshart to the next level on Sunday night after she was snapped sporting a dazzling diamond on her ring finger as she hosted the Miss USA Competition in Las Vegas, Nevada. On Monday, a representative for Kelly insisted she was "not engaged", but it appears even her mom Sharon Osbourne was not convinced - and she called Kelly to make sure the proposal rumors were just that - rumors. Sharon's The Talk co-host Julie Chen dared her to phone Kelly live on air to get to the bottom of the reports - and she obliged. When her daughter answered the phone from London, Sharon asked, "Darling, are you engaged again?" - only to be met with silence as a fed-up Kelly hung up in disbelief. Sharon Osbourne was none the wiser about her daughter's relationship status, but she admitted she wouldn't be surprised if it was true as the 27 year old has been engaged three times before. The rock matriarch said, "I have, of hers - I swear to you - in a little plastic bag, three engagement rings. They (her engagements) don't last!" But Sharon insists she would be happy if Kelly settled down with Mosshart: "She does (like him). I like this one. He's American and he's a pastry chef and I like that because he makes me cakes." Kelly was previously set to wed model Luke Worrall, but she dumped him in 2010 amid allegations of infidelity. WENN.com You May Also Like Kelly Osbourne: Weight loss is a journey Kelly Osbourne suffers seizure Did Lady Gaga STEAL her act?? Become a fan of The Edge on Facebook and on Twitter .