A popular New York City influencer has admitted to forcing a little boy she was babysitting to smoke a vape after the shocking video she filmed resurfaced online.

Fiona Jordan, 23, who has 100,000 followers on Instagram and almost 600,000 on TikTok, came under fire after a clip of a young child smoking while in her care was posted on social media.

In the video, an unnamed boy was seen putting his mouth on the vaporizer device, which was being held out for him by one of the two girls involved.

The boy exhaled and smoke drifted from his mouth - causing the girls, including Jordan, to burst into laughter as the child coughed and looked around in confusion.

Hours after being contacted by the Daily Mail for comment, Jordan admitted her involvement in the scandal - saying she was 15 years old at the time when she encouraged and recorded the act, and now takes full responsibility.