Lizzo was "bothered" that people used to focus on her size

Speaking on 'My Next Guest Needs No Introduction' with David Letterman, Lizzo explained: "It bothered me for a long time that all people could talk about or think about was my size.

"I didn't like it when people condemned me for it and kind of rubbed me the wrong way when I was praised. Like 'you're so brave!'

"They thought they were complimenting me by saying I was unapologetic. I was like 'What do I have to apologise for?'"

The singer recalled being frustrated by one particular incident.

She said: "In 2014 I was wearing a leotard onstage with two big girls also in leotards and saying I love myself, I think people were like 'How dare she, how dare she love herself, how could she?'"

The 32-year-old musician also dec lared she was "sick of being an activist because [she's] fat and black" and instead wants the focus to be on her music and her values.

Lizzo said: "I want to be an activist because I'm intelligent, because I care about issues, because my music is good, because I want to help the world."

The 'Juice' singer recently revealed that she hopes to "normalise" her body.

She explained: "I would like to be body-normative. I want to normalise my body. And not just be like, 'Ooh, look at this cool movement. Being fat is body positive.'

"No, being fat is normal. I think now, I owe it to the people who started this to not just stop here. We have to make people uncomfortable again, so that we can continue to change."