London, Feb 5: Sharon Osbourne has been slapped with a lawsuit by a jewellery company for allegedly going back on a million-dollar deal to promote a line bearing her name on a shopping channel.

The reality TV star has hit back saying she will "vigorously" defend the US legal action.

According to the firm, she backed out of a verbal agreement after a range of accessories bearing her name had been created, the Daily Star reported.

Osbourne's spokesman said she was looking to create her own jewellery but "no agreement existed with this company". (ANI)