Security had to wade in when the businessman, known only as Frederic, stormed a photocall session and threw himself at the model-turned-actress, proffering the cheque in return for “one night with Kelly”.
The 32-year-old initially thought that it was a stunt organised by comedian Keith Lemon, whose film she was helping to promote.
However, when the thirty something stranger started trying to grab her, shrieking “Just one night! Please, one night! I have money...! she realised their was a big problem and frantically sought help.
A bodyguard sprinted to the star, hauled Frederic away from Brook and ejected him from the plush Majestic Barriere hotel.
Shaken but determined to continue, Brook gamely posed pool-side beside a leopard print pant-wearing Lemon, the Mirror reported.
In the cult 1993 movie ‘Indecent Proposal’, Demi’s married character agrees to have sex with businessman Robert Redford, in return for 1 million dollars.