FLASHBACK: A 21-Year-Old Jennifer Aniston Is Adorable in Her First 'ET' Interview

All hail Jennifer Aniston!

Happy birthday, Jennifer Aniston!

The actress celebrates her 46th birthday Wednesday, so we're taking a trip back to 1990 when ET first sat down with then-21 year old star, who had just landed a supporting role as Jeannie in the short-lived TV adaptation of Ferris Bueller's Day Off.

“You had one day, and now you're just going to see the continuation of what this kid is all about and all the other things he gets himself mixed up in and it should be fun,” Aniston told ET of the role.

WATCH: Jennifer Aniston’s Adorable Reaction to Fiance Justin Theroux

Realizing the role was a farcical one, she decided to just have fun with it.

“That's what makes it fun because you can go just a little bit overboard, make it really crazy,” said Aniston, “Makes it more fun for me!”

The show was cancelled after just one season -- but as you’re probably well aware, Jen turned out just fine.

Check out this video for adorable 21-year-old Jennifer Aniston’s first ET interview.

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