A Fox News reporter accidentally lifted up her dress during a TV broadcast revealing her underwear.

The Argentinian news presenter, Alina Moine, was talking with her co-presenter about the Rio de Janeiro Olympics when she lifted her hand to her face.

Her hand was accidentally caught on the bottom of her dress and the skirt was pulled up revealing her skin-coloured knickers.

Moine quickly pulled her dress back down and continued the segment, as if nothing happened.