"The New Adventures of Old Christine" 2006

Synopsis:

Single working mom Christine Campbell has just learned that her ex is dating a much younger woman with the same first name. To avoid any confusion, the new girlfriend is dubbed New Christine, which leaves her with the unfortunate nickname Old Christine.

Written by: Kari Lizer & Sherry Bilsing & Jeff Astrof & Katie Palmer & Ellen Kreamer & Frank Pines & Allan Rice & Danielle Evenson & Amy Iglow & Jack Burditt & Steve Baldikoski & Bryan Behar & Matt Goldman & Jackie Filgo & Jeff Filgo
Cast:
Julia Louis-Dreyfus
Julia Louis-Dreyfus
'Old' Christine Campbell 
Clark Gregg
Clark Gregg
Richard Campbell 
Hamish Linklater
Hamish Linklater
Matthew Kimble 
Trevor Gagnon
Trevor Gagnon
Ritchie Campbell 
Emily Rutherfurd
Emily Rutherfurd
'New' Christine Hunter 
Tricia O'Kelley
Tricia O'Kelley
Marly Ehrhardt