Premise: ``Old Christine'' (Julia Louis-Dreyfus) is a divorced mom who has a handle on her career and motherhood -- and a pretty good relationship with her ex-husband -- until he introduces his new girlfriend, a younger woman, also named Christine. Old Christine lives with her son and her brother, and runs a gym, and her life is a constant struggle to keep up with everyone else.
S05, E20 (First Aired: May. 5, 2010)
Christine mistakes a good looking cop for a stripper, who alerts her that there is a prowler in the neighborhood. Later on, New Christine goes into labor; unfortunately for Old Christine, it happens to take place on her birthday!
S05, E21 (First Aired: May. 12, 2010)
When Christine has Matthew and Barb throw her a surprise engagement party so she can get to know Max's friends, she begins to feel intellectually inferior to one particular guest, driving her to make a surprising decision.