Reality TV show winner Connie Fisher has been forced to cancel a solo tour in order to undergo surgery on her vocal cords.

The Mirror reports Fisher – who sprang to fame after winning the BBC1 show How Do You Solve A Problem Like Maria? in 2006, has been told she needs the operation in order to be able to sing again.

Specialists in the US have said that the 25-year-old former switchboard operator suffers from a condition known as congenital fusion anomalies, and that it was a “miracle” she was ever able to sing in the first place.

As a result, her 14-day Secret Love tour, due to take place across the UK in May and June has been shelved.

Fisher won the role of Maria in Andrew Lloyd Webber’s new production of The Sound Of Music after taking part in the talent show.

Having appeared in the production at the London Palladium she had signed up to reprise the role when the show opens at Cardiff Millennium Centre in August. However her management said it was unclear whether she would still be able to appear.

“Following consultations with specialists in the US it has been decided that for Connie to have any chance to perform again a procedure on her vocal cords has to be carried out,” her management said in a statement.

“Connie’s doctor has advised her that the situation has been with her from birth.

“It is not uncommon in general. However, in singers he has never heard of this situation before.

“Effectively, how Connie has ended up having a singing career is nothing short of a miracle.”