Idina Menzel and Taye Diggs

Idina Menzel and Taye Diggs

Idina Menzel and Taye Diggs have secretly divorced.

The 'Frozen' star married the actor in January 2003 after meeting during the original Broadway production of 'Rent', but have now officially divorced after separating in 2013.

The couple - who have five-year-old son Walker together - finalized their divorce on December 3 after a year apart, and are believed to have spent their 12 month separation deciding on child custody and asset issues, in order to ensure a swift end to their marriage after Taye submitted court documents in New York in November.

The 43-year-old 'Let It Go' singer - who has previously appeared in 'Enchanted' and 'Glee' as well as playing the original lead role of Elphaba in the stage musical 'Wicked' - and her former husband remain committed to raising their son - a source told gossip website TMZ - and have had an "amicable" split.

Following their break up in December 2013, the 44-year-old 'Private Practise' actor told Redbook magazine: "I'd be lying if I said there weren't times when I thought, 'Oh, man, people are going to trip out [if we split].' Maybe they thought it was cute that we met in Rent.

"Right now, we're still trying to figure out a lot of stuff because we're on different coasts and our son is getting older."

Since their separation, Taye has begun dating model Amanza Smith Brown, who a source said the star is "100 percent in love" with.

In April 2014, the insider said: "They are 100 percent in love.

"They have been dating for a while."