How do I dress like ET?

What did Gertie dress up as for Halloween in ET?

Cosplay Elliot’s iconic scene by wearing a Grey Shirt and Red Hoodie with a pair of Light Blue Jeans. That’s as far as you have to go when it comes to looking like Elliot. Next, take a Black Plastic Crate and inside, put your very own E.T. Plush Toy to save from the evil government agents.

What can I do for Halloween without costume?

We first found out that Gertie was dressing up as a cowgirl for Halloween when she told Mary this, at the dinner table, near the beginning of the film. When Halloween approached, Gertie was shown, in her cowgirl costume, ready to go trick or treating.