The 39-year-old, who will return to TV screens next week when she co-hosts Celebrity Haunted Mansion, revealed that the mystic had approached her in the street when she was growing up.
Explaining that she was hoping to move schools at the time, the Loose Women presenter confessed that the psychic had reassured her, telling her to stay.
Speaking about the mystic moment with OK! Magazine, Christine said: “I was 12 and I’d just started at a new school.
“None of my friends were there and I wanted to move.”
She recalled: “This woman stopped me and Mum on the street and said, ‘This sounds really crazy but I’m a medium and I’ve got your grandmother Catherine here.
“Catherine is telling me you’re not happy at school and you’re thinking of moving but don’t move. It’s going to be the best thing for you.’
The Northern Irish broadcaster added: “I ended up staying and it all turned out good. I swear on my life.
“How weird is that? Me and my mum still to this day talk about that.”
Christine, who will appear alongside Matt Richardson to host the latest series of Celebrity Haunted Mansion, also discussed a spooky encounter she’d had in the past.
The Loose Women panellist revealed: “I get really weird feelings about places.”
The star went on to explain one particular near-miss encounter which had seen Christine and her husband Frank Lampard narrowly miss some scaffolding falling on them.
Remembering how she had been struck by a strange feeling while walking down a street, she revealed, ‘I said, ‘Frank, I swear something is going to happen.’
“I gave him a shove and, as I pushed him into the road, this huge clump of stuff fell off.”
She continued: “We would have been killed, 100 per cent.”
Read the full interview in this week’s OK! Magazine, out now.
Celebrity Haunted Mansion airs for five nights live from February 21 at 9pm on W.