She wore a black blazer-style mini dress for an appearance on The Late Show and switched to a comfy jumper and shoes later.
Earlier in the day in New York, she was in a camel trench coat and boots as she went on Good Morning America.
Her movie Poor Things is up for 11 Oscars — including Emma, 35, for Best Actress.
Emma previously revealed her favourite British shows – and they might not be what you expect.
The La La Land actress made the surprising admission as she toured the world for her latest project.
With dozens more nominations and constant projects on the go, the actress is busier than ever.
But as it turns out, if she is not on set filming another blockbuster movie, she likes to binge on British TV in her down time.
Speaking on the New Year’s special of The Graham Norton show, she admitted: “My foray into it began with The Only Way is Essex of course, and then I learned all about Naked Attraction and Gogglebox.
“I became completely crazy about it and in America the two shows are a double feature. They are back-to-back so it’s cosy family viewing followed by nakedness. I love that!”