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Christina Applegate celebrates her 41st birthday today -- and what better way to mark the occasion than by checking in with the cast of a classic 1991 flick: "Don't Tell Mom the Babysitter's Dead."

Coming off of the success of "Married ... with Children," the movie was Applegate's first lead film role and follows a group of kids as they fend for themselves after their babysitter dies while their mom is on vacation.

With memorable lines like "I'm right on top of that, Rose" and "The dishes are done, man!", the flick has become a favorite for kids of the '90s ... and Applegate's been a busy girl ever since!

She went on to star in TV shows, films, had a stint on Broadway and was even one of the founding members of the Pussycat Dolls.

Applegate also overcame a very public battle with breast cancer, went through a divorce, got re-married and had a baby.

We loved her then and we love her now on "Up All Night" ... Happy Birthday, Christina!

Find out what happened to the rest of the cast in the gallery above.

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