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Susan Sarandon is transforming into Baby Jane.

A vocal coach was hired, and Sarandon listened to Davis interviews for three weeks straight.

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Robert Trachtenberg for EW

All I did was wake up in the morning and start listening, she says.

Go to work, come home, and do it again.

She regretted that she married so many times.

And like Davis, says Sarandon, I never saw myself as being one of the beautiful girls.

I was always the character girl, not the main pretty girl who got the guy.

So I kind of understood that and related to that.

Go toPEOPLE.com/PEN,or download the free app on your Smart TV, mobile and web devices.

(In long shots shes wearing flats and standing still.)

With her face now smeared white, Sarandon is ready for the rest of the Baby Jane drag.

Id completely forgotten [about the scary Baby Jane makeup].

Sarandon widens her eyes and puts on a panicky smile.

I said, Do you like my clown makeup?

My funny clown makeup?'