Former glamour model Katie Price has sparked rumours it's all over between her and husband Kieran Hayler...

She’s in full promo mode for her sixth autobiography, but as Katie Price arrived at the BBC studios today for a radio interview something big was noticeably missing…

Katie, 38, was snapped outside the building holding a copy of the book in her right hand, but it was her left hand that caught our attention: she wasn’t wearing her GIANT wedding ring.

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The mum-of-five made no attempt to hide this from the waiting photographers, but could this mean trouble between her and husband Kieran Hayler?

She married third husband Kieran in January 2013 but to say their relationship hasn’t been plain sailing would be an understatement. Less than a year after tying the knot, Katie revealed Kieran had been having a 10-month ‘full-blown sexual affair’ with her best friend Jane Pountney.

And, while she claims to have forgiven Kieran, it’s clear Katie is still not over his ultimate betrayal. The mum-of-five recently told Now: ‘Kieran will never, ever know the pain and hurt I went through. It’s like two people got murdered, that’s what it feels like.’

During promotion for Rebirth Katie seems to have morphed back into her alter-ego Jordan: she propositioned us during our exclusive chat at London’s Soho Hotel – ‘Sit on my lap, get your d*** out and I’ll suck it’ – and, during an appearance on The Xtra Factor she demanded a threesome with The Brooks brothers.

Kieran is undoubtedly feeling embarrassed by his wife’s behaviour, but could Katie’s determination to make her latest book a hit – along with her ever-present insecurities – have proved too much for them to deal with?

You know what they say, Katie: actions speak louder than words…