Gemma Atkinson briefly dated footballer Cristiano Ronaldo in 2007

Gemma Atkinson, the former Hollyoaks actress who dated Cristiano Ronaldo, is joining the cast of Casualty this weekend.

The glam 26-year-old - a lads' mags favourite with her hot bikini body - will now be donning a modest paramedic uniform to play Tamzin Bayle.

'Tamzin is going to bring a touch of glamour to the paramedic team and set some hearts racing in the emergency department,' says show producer Oliver Kent.

Gemma is a regular in FHM's Sexiest Women list but has never posed topless.

Last year she played a housewife in a small theatre production of The Is How It Goes and is now very excited about her venture into medical drama.

'I used to watch [Casualty] as a child,' Gemma tells MailOnline. 'So to be involved is fantastic.'

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Esme Riley