FANS joked Jason Day would be kicked out of a casino for his bold outfit at The Open.

The Australian, 37, is never to shy away from a fashion statement on the golf course.

And it was no different for the opening round of The 153rd Open at Royal Portrush.

Day teed it up with Taylor Pendrith and early pace-setter Jacob Skov Olesen on Thursday morning.

And he did so in another belting number.

The 2015 PGA Championship winner opted for a truly unique kit.

The design of his navy cardigan and matching sleeveless vest featured unusual artwork of a character, crown and a three-leaf clover.

And Day completed the look with a navy visor for good measure.

Needless to say, it stirred up quite the reaction on social media.

And fans were split over the one-of-a-kind outfit.

One said: “A gaudy shirt,” followed by a thumbs down emoji.

Another wrote: “Questionable sweater but still looks decent.”

A third added: “Fire.”

A fourth typed: “Horrendous.”

A fifth replied: “Begging for attention in all the wrong ways.”

A sixth responded: “I could definitely go without ever having to see a Jason Day outfit again.”

A seventh commented: “Thought he had a Christmas jumper on for a sec.”

And a final user quipped: “He’d be kicked out of a casino for that.”

Day was forced to change his clobber at the Masters last year for preaching their strict rules.

Twelve months later, Augusta chiefs even asked the Aussie to tone down his outfits.

Then he wore a showstopping stars-and-stripes combo – including American flag shorts – at the US Open.