Here is a short article from News Of The World:

BOOTY LUV nearly had a famous extra in their vid for new single Say It when Girls Aloud’s NICOLA ROBERTS wandered on set.

NADIA and CHERISE were filming in the lobby of London’s Mayfair Hotel with 10 cameras as Nicola arrived for an appointment.

She thought the cameras were for her.

A source said: “She was a bit taken aback. But she soon saw the funny side when she realised what was happening.

“Nadia and Cherise had a good laugh with her about it.”

Source: http://www.newsoftheworld.co.uk/showbiz/xs/420787/Sarah-Harding-gets-the-axe-Exclusive-St-Trinians-snaps-plus-more-Girls-Aloud-gossip.html