Students wearing blue shirts and chinos have been banned from a popular university club night. Cardiff University Students' Union (CUSU) has introduced the temporary clothing ban at its Wednesday YOLO event, one of the biggest student nights out in the capital.

The preppy outfit is typically associated with young men involved in sports clubs. The union made the decision after "reckless, dangerous and incredibly irresponsible" behaviour by a group of male students on October 4, reports The Tab.

The Students' Union added in a statement to WalesOnline that the restrictions are "temporary, not aimed at a specific group and is in direct response to a specific recent incident" and have been implemented for student safety. The incident in question was not specified by the Students' Union, which is independent from the university. Join our WhatsApp news community here for the latest breaking news.

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However, the BBC reports that in an email sent to members of the university's Athletic Union, the CUSU said the behaviour occurred in a queue for an event at the union and security had to intervene. The email continued that there had been "marked improvement in behaviour in the queue" since it ban came into force and the union vowed to continue with the restriction until concerning behaviour was "rooted out". For the latest Cardiff news, sign up to our newsletter here

A Students’ Union spokesperson told WalesOnline: "Supporting students to have fun in a safe manner will always be a fundamental part of how we organise and deliver events. As a not-for-profit venue owned by a registered charity that promotes student welfare, we invest in safety initiatives that go above and beyond industry standards.

"The Students’ Union is proud to run the most popular student entertainment programme in Wales with over 8,000 visitors to the venues each week. Whilst there are minimal incidents reported, we prioritise safety in managing our events.

"It is our established practice to proactively respond to behaviour concerns so we can ensure that our events are safe, accessible and comfortable, and we thank the student body for their support in achieving this. The current clothing restrictions are temporary, not aimed at a specific group and is in direct response to a specific recent incident.

"The Students’ Union proactively communicates any changes in safety measures to students to ensure they know of the initiatives in place. We regularly review the effectiveness of our safety measures in line with best practice in the sector."