Prince Andrew's ex-girlfriend is to join 'Celebrity Big Brother.'

Koo Stark

Koo Stark

Koo Stark has reportedly signed a deal to take part in the upcoming series of the reality TV show, which kicks off in January, after bosses lined her up in the hope she'll make some shocking revelations about her romance with the royal.

A source explained: "We think Koo is a brilliant booking. There aren't many people who dated a royal."

The actress, 59, romanced the 55-year-old Prince - the son of Queen Elizabeth and Prince Philip - briefly during the 80s after they met on a blind date.

Andrew even introduced the American beauty to his royal relatives and they were tipped to marry, but their relationship allegedly came crashing down 18 months later when it emerged Koo had starred in the erotic film 'Emily' in 1976.

Apart from opening up slightly earlier this year when she defended Andrew from allegations he had slept with a teenage "sex slave", Koo has remained tight-lipped about her brief encounter with the royal family over the years.

But Channel 5 bosses are hopeful she'll get comfortable with her fellow housemates and spill the beans on their affair.

The insider added to The Sun newspaper: "She has traditionally been very discreet, but if she decides to open up, she will have some amazing stories to tell."

Meanwhile, 'Strictly Come Dancing' professional Kristina Rihanoff is also being tipped to ditch the BBC One show and join the line-up, as is axed 'Hollyoaks' star Stephanie Davis.

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