Lily Tomlin has married her long-time partner and collaborator Jane Wagner after more than four decades together.

Lily's publicist Jennifer Allen told People magazine and other media outlets that the 74-year-old actress and comedian married 78-year-old Jane in a private New Year's Eve ceremony in Los Angeles.

The US star gained fame through the 1960s sketch show Laugh-In, went on to star in movies like 9 To 5 and All Of Me and more recently was a regular on the TV shows Murphy Brown and The West Wing.

Jane was writer of Lily's Tony-winning one-woman show The Search For Signs Of Intelligent Life In The Universe, and wrote the screenplay for her movie The Incredible Shrinking Woman.

Chicago Tribune columnist Liz Smith, a friend of both women, first reported the marriage.