Vicky, 27, lashed out at 23-year-old Marnie, claiming she had attempted to leave a party with her ex-boyfriend Stephen Bear in an attempt to get photographed with him.
But Marnie has dismissed these allegations.
She tweeted: “Lies lies and more lies, you say you won’t argue with me but yet you talk about me weekly get a grip man you obsessed old bagggg ! @vickyGShore [sic].”
During an interview in OK! Magazine, Vicky addressed some rumours about Marnie she’d heard through reality TV friends.
She said: “[Marnie] tried to ask my boyfriend, Stephen Bear, to go to a cash machine with her. She was bang out of order, wasn’t she?
“Stephen went to Jenes for Genes without us, which I was totally fine with, and then Danielle [Armstrong] rang me up and said Marnie had been asking him to go to the cash point with her.
"She obviously wanted to get papped."
Marnie was seen leaving the party with TOWIE’s Lewis Bloor, and Vicky added: “If it had been Stephen Bear I would have set her on fire. I’m not joking. What the hell? Go get papped with someone who is single why does it have to be my lad?”
Vicky has since split from Stephen, and confirmed the news in her weekly magazine column.