While mostly sticking to the script, Black said there was some opportunity to throw in “some flavour crystals”.
Hudson joked that she did very little preparation for the film, which has already grossed over £221m worldwide.
She said: “I just show up to work in my sweats and read the script.”
Hudson added that she celebrating Mother’s Day today: “In America we always just have brunch and my son is half Brit so it’s kind of my Mother’s Day too I guess.”
Kung Fu Panda 3 will be released in cinemas on 11 March.
