Fergie 'preparing' for January wedding

Black Eyed Peas singer Fergie is expected to tie the knot with fiancé Josh Duhamel in January 2009.

The star, real name Stacey Ferguson, is reported to have chosen the second week of January to marry Duhamel in Southern California.

The Transformers actor proposed to Fergie last year after three years together.

"She is working with Chanel designer Karl Lagerfeld on getting her fantasy gown," a source told OK!.

"They are taking their time to get everything right. They only plan on getting married once."

A host of celebrity guests have been invited to the ceremony, including Kate Hudson, Nicole Kidman, Penelope Cruz, Sophia Loren, Marion Cotillard and Daniel Day-Lewis.