ASTRID WETT has been slammed by fans for breaking a cardinal rule at a football match.

The female sports influencer, 23, who is a big Chelsea fan, was at Stamford Bridge for the Blues game against Man City.

Astrid Wett poses in a half-and-half shirt outside Stamford Bridge

Wett, who supports Chelsea, sported half a Man City shirt

Wett is a big Chelsea fan

It proved to be a thrilling contest – with the sides providing a 4-4 draw and plenty of drama.

But before the game Wett provided plenty of talking points with her outfit choice.

Wett appeared to be supporting both teams with a top she was sporting.

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Half was the Blues, while the other half was the Cityzens.

It was sin for footy supporters, who thought the faux pas was far worse than a half-and-half scarf.

One fan wrote online: “That is the most horrific shirt I have ever seen.

Another added: “The state of that honestly doesn’t get much worse does it.”

While a fourth shared: “I thought there was nothing worse than a half-and-half scarf. Pathetic!”

YouTuber Wett has made a name for herself as a boxer.

She recently defeated Alexia Grace in the Misfits Boxing competition held by KSI.

She has defeated each of her first three opponents, and Elle Brooke is the favorite to be her next opponent.