Conversation so far:
Where did Julia Louis-Dreyfus begin Julia Louis-Dreyfus's early career?
As part of her comedic training, Louis-Dreyfus appeared in The Second City, one of Chicago's best-known improvisation theatre groups.
Who else was part of this group?
The Second City, one of Chicago's best-known improvisation theatre groups (whose alumni include Alan Arkin, Steve Carell, Stephen Colbert, Tina Fey, Amy Poehler, and Shelley Long).

Question: When did she get another big break in her career?
Self-contained rewrite: When Louis-Dreyfus get another big break in her career in addition to The Second City?