Emily Blunt

In the clip from the The Jonathan Ross Show, first aired in 2012, Blunt describes a waitress as "enormous".

The video was widely shared online this week, with some criticising Blunt for being "fatphobic".

The Oppenheimer star has since said she was "appalled" to have said "something so insensitive" and "hurtful".

During the interview, Blunt recalled making the film Looper in the United States and detailed her encounter with the restaurant server in a local restaurant.

Emily Blunt started her Wednesday by appearing on the host's popular Sirius XM show. While the actress may have been stopping by to promote her new film Sicario, the conversation quickly turned to a famous ex-boyfriend.

Stern began to praise Michael Bublé as a bright and fun man—two characteristics Blunt completely agreed with. But when Stern suggested that they were "perfect together," Blunt wasn't so sure.

"I don't know if I was perfect with him," she shared on the show. "But we had a good time."

She continued, "I loved his family. I still do. I love his family."