Metallica frontman James Hetfield is divorcing his wife of 25 years, Francesca, reports have claimed.The rockstar and his wife had three children together in their decades-spanning relationship, but their marriage is apparently all but over with the couple in the process of divorcing. James and Francesca first met in 1992, later tying the knot in 1997, and became parents to daughters Cali, 24, and Marcella, 20, as well as 22 year old Castor.The Master of Puppets singer, 59, reportedly filed for divorce from his wife earlier this year, but the split has only just become public knowledge with TMZ reporting James filed for divorce in Colorado earlier this year but has tried to keep their split low-key.