TV presenter handed a cardigan on air and told to cover up.

A meteorologist has been publicly humiliated live on air when a male anchor passed her a cardigan to cover up the dress she wore during a broadcast.

Liberté Chan was presenting the weather report for American news station KTLA on Saturday when weekend anchor Chris Burrous handed her a cardigan.

Chan was given no warning when the garment suddenly appeared on the right-hand side of the screen.

"You want me to put this on," Chan said.

"Why? Because it's cold?"

"We're getting a lot of emails," Burrous said.

The meteorologist calmly pulls the garment on and attempts to hide her obvious disgust at the situation.

"WHAT? Really," Chan said.

As Chan pulls the cardigan over her shoulders, anchor Burrous condescendingly whispers: "There you go ... there you go" - a total of FIVE times.

Maintaining an air of complete professionalism, Chan continues her report with only one sly dig at the ludicrous nature of the situation.

"I'm trying to hold this together in my little sweater," she said.

The incident was quickly picked up on social media as users on Twitter mostly criticised the incident using the hashtag #sweatergate.

Chan took to her own social media to respond to the situation, explaining the dress was actually a back-up garment after the initial one was 'keyed out' because it didn't work in front of the studio's green screen.

Chan posted a clip of the video to her Facebook that asked her following whether they thought the dress was too revealing.

The clip continues to trend across social media as domestic and international viewers debate the actions of the station.

There is yet to be a public apology from the station despite mounting media attention.