Louis Walsh 'gets teeth whitened'

Louis Walsh has had his teeth whitened by Simon Cowell's dentist for the new series of X Factor.

The Irish judge, 56, has made "secret weekly visits" to a surgery, according to The Sun.

Walsh, Cowell, Dannii Minogue and Cheryl Cole were at X Factor auditions in Glasgow yesterday.

"Yes, Louis has had his teeth done," said a show source. "He is very much looking forward to showing them off - though there is no way he was ever going to go as white as Simon."

All the finalists on last year's series were offered teeth whitening by the show's producers.

"Dental hygiene and pristine teeth are two subjects close to Simon's heart," added the insider.