Model and activist Iskra Lawrence left commuters on a New York subway train more than a little surprised after she interrupted a journey... to strip off.

The Daily Mail reports that the curvaceous beauty, 26, took off her dress to deliver a powerful speech about body shaming, leaving those close by not knowing quite where to look.

And after the model had passionately implored them to "celebrate difference", they gathered themselves long enough to break out in applause.

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The British model, who divides her time between the Big Apple and London, began her soul-stirring delivery only to be interrupted by an announcement on the train.

Looking a little flustered Lawrence, who has 2.8 million followers on Instagram, started again, telling those on the train: "This is bad timing!"

British model Iskra Lawrence began stripping off in the middle of a New York subway train.
British model Iskra Lawrence began stripping off in the middle of a New York subway train.

Wearing a black dress, she then launched into her speech, telling those around her she wanted to "make herself vulnerable" to show how far she'd come on her "journey" of self-acceptance.

Calling her body a "vessel", Lawrence revealed how she grew up "hating" herself because she didn't fit to the "small standards of beauty" put on society by the media.

The video, created the day after America's election, sees her strip down to her underwear.

After posting the video last night, Lawrence wrote: "I strip down to share my voice and use my power to start a conversation about the relationship with ourselves and each other.

"We all have our own unique power and sharing it with the world is something really special and hopefully the more we can listen and learn from each other we become more open minded and less judgemental."

She added: "At the end of the day we are all one race, the human race and we are all equal."

The feedback to her video is largely positive, with many applauding the star for making a stand against body-shaming.

However, some of the feedback suggested that the speech hadn't quite delivered the impact Lawrence might have hoped for.

The model has frequently used her high profile to talk openly about accepting different body sizes and the need for the fashion industry to stop using models that don't represent real women.