Rugrats - Season 8 - Eps 59: Cynthia Comes Alive
A the Java Lava, Angelica brings over her new "Hip Teen Cynthia" doll, which talks. However, when Angelica wasn't looking, the Rugrats have broken the doll. Shortly after Stu took it home to fix it, Cindy, a high school intern, came over to work at the Java Lava. When they noticed that Cindy looks and talks like Cynthia, Angelica and the Rugrats thought that Cynthia came to life. Meanwhile, Cindy causes trouble for the Java Lava by not working at all -- she considers nail polish, magazines, and phone conversations to be more important than actually working.
About Rugrats

Title: Rugrats
First Air Date: 1991-08-11
Last Air Date: 2004-08-01
Status: Ended
Rating: 7.6/10 (from 715 votes)
Language: EN
Seasons: 10
Total Episodes: 322
Network: Nickelodeon
Genres: Family, Animation, Kids, Comedy
Production Companies: Klasky-Csupo, Nickelodeon Productions, Nickelodeon Animation Studio
Synopsis
Focuses on a group of toddlers, most prominently Tommy, Chuckie, Phil, Lil, and Angelica, and their day-to-day lives, usually involving common life experiences that become adventures in the babies' imaginations. Adults in the series are almost always unaware of what the children are up to; however, this only provides more room for the babies to explore and discover their surroundings.
Cast

E. G. Daily
Tommy Pickles (voice)

Kath Soucie
Phil DeVille / Lil DeVille (voice)

Cheryl Chase
Angelica Pickles (voice)

Dionne Quan
Kimi Finster (voice)

Tara Strong
Dil Pickles (voice)

Joe Alaskey
Lou Pickles (voice)

Melanie Chartoff
Didi Pickles (voice)

Tress MacNeille
Charlotte Pickles (voice)

Jack Riley
Stu Pickles (voice)

Cree Summer
Susie Carmichael (voice)