Scrappy: I Want to be an Actress
(USA, 1937)
 

Introduction
After being created by Dick Huemer in 1931, the cartoon character Scrappy remained aboard Mintz's studio until 1933. With Huemer's departure, his colleagues Sid Marcus and Art Davis assumed control of the series. The final Scrappy cartoon was released in 1941. It was called The Little Theatre.

In the Scrappy cartoon I Want to be an Actress, Scrappy’s girlfriend Heidi spoofs Garbo’s famous line from “Grand Hotel”.

Scrappy

Directed by:	Produced by: Krazy Kat Studio
Production company: Screen Gems	Distributed by: Columbia Pictures
Release date: July 18, 1937	Running time: 7 minutes
Country:  United States	Language: English

The plot
Scrappy's girlfriend Heidi sneaks into his makeshift movie studio, where she hopes he can be convinced to make her a star. She does imitations of Greta Garbo and Katherine Hepburn.

Looking like a little girl version of Garbo, she declares, "I WAWN TO BE AN ACTRESS", parodying Garbo's famous line from Grand Hotel.

 
Heidi parodying Miss G

Then, Scrappy, Heidi, and Oopy go into a tap dance number based on two tunes associated with Alice Faye – The Balboa Song and Sing, Baby, Sing.

Over five decades later, the cartoon was edited into The Divine Garbo (1990) (TV Documentary hosted by Glenn Close). It was used as an example of how Garbo was parodied by Hollywood.
 

Source: IMDB and Wikipedia