Saudi Arabian Airlines (also known as Saudia), the national carrier of Saudi Arabia, has warned passengers about the way they dress, stating that those who are “clothed in a manner that would cause discomfort or offense to other passengers” could be denied boarding.

The restrictions apply to “women exposing legs or arms, or wearing too thin or too tight clothes and men wearing shorts exposing legs” as well as passengers who are barefoot, the airline’s website states.

The dress code, which has provoked outrage on social media, is refered to within a list of rules about passengers’ code of conduct on the website.

Women in Saudi Arabia, including foreigners, are required to wear an abaya (a long black cloak) that covers the entire body, except for the hands and face, in public Credit: Getty

A seperate page of the website, written in English and created to draw attention to the carrier's dress code, today appeared to have been taken down, following a flurry of criticism on Twitter.

Despite being contacted by Telegraph Travel, Saudia has yet to confirm whether these requirements apply to all passengers across all classes on the plane, from business travellers to children and babies, or whether male passengers would also be refused boarding if they wear clothes that are too thin or tight or expose their arms. It has yet to clarify how the dress code will be enforced during the flight and what might be the consequences for any passengers who remove any clothing that would expose their arms and legs during the flight.

The dress restrictions are included within the general passengers’ code of conduct section of the website Credit: Saudi Arabian Airlines

It has also yet to confirm when the dress code was issued and why it was imposed at all.

Saudi Arabia’s former head of tourism and health, Ali Al Ghamdi, claimed Saudia’s dress requirements were not exclusive to the carrier but were issued by the International Air Transport Association (IATA), and enforced in varying degrees by different airlines.

But IATA has denied those claims. “Reports in the media that IATA issues guidelines on dress code are incorrect. Dress code policy is entirely at the discretion of the airline,” a spokesperson for IATA told Telegraph Travel.

Nudity does not cause me any offence and/or discomfort so is that acceptable? #SaudiaAirlines — Taiwo Hollist (@TaiHoll) August 10, 2017

Saudia states that it “takes all the measures it possibly can to maximise passengers’ comfort and convenience” and its website advises passengers to “wear comfortable clothes when you travel. Tight-fitting clothes may naturally cause some discomfort and it is advisable to wear loose-fitting clothes instead."

#SaudiaAirlines enforcing a dress code?!? Wow you'd never get that in somewhere like #France #Women can wear whatever they want...Wait??? — Shabz (@ShabzyDon) August 10, 2017

Saudi Arabian Airlines, which launched more than 70 years ago, operates flights from London Heathrow to Jeddah, Riyadh and Yanbu. Earlier this year, it was named the 'World's Most Improved Airline' at Skytrax's annual World Airline Awards, ranked 51st (up from 82nd last year) among the world's best airlines.

✈️ Fly the Unfriendly Skies with #SaudiaAirlines: airline imposing regressive Muslim dress code on ALL passengers. https://t.co/zXdSCx5tWl — Ϯஐ รครรคfгครร Ϯஐ (@SassafrasSassy) August 9, 2017

The airline previously came under fire in 2015, when it denied claims that it was considering enforcing a gender split on its flights after it reportedly received complaints from male passengers who were unhappy about other men sitting next to their wives and female family members, and a complaint about a flight attendant being too 'flirty'.

“We would like to emphasize that no Saudia official has made any statement on gender segregation,” the airline said in an official statement at the time.

The dress code has sparked debate on social media, with mixed responses, including strong criticism, including one user on Twitter who posted "Passengers to be subjected to Islamic air control? We want to travel, not be subjugated by religion". Another user disagreed however, hailing the dress code as a "good step indeed".

"#SaudiaAirlines enforcing a dress code?!? Wow you'd never get that in somewhere like #France #Women can wear whatever they want...," one user posted, while another added: "Nudity does not cause me any offence and/or discomfort so is that acceptable?"

Other responses were humorous, such as the one below.

Saudia Arabia, which adheres to tenets of Islamic law, dictates a strict dress code for people in the country. Women in Saudi Arabia, including foreigners, are required to wear an abaya (a long black cloak) that covers the entire body, except for the hands and face, in public, while men are expected to dress conservatively. Men wear a thobe (a traditional dress for men) and a headdress in public.

“Women should observe the strict Saudi dress code and wear conservative and loose-fitting clothes, including a full-length cloak (abaya) and a keep a scarf with them in case they are asked to cover their head by the Hai‟a, commonly known as Muttawa (Promotion of Virtue and Prevention of Vice/Religious Police). Men should not wear shorts in public or go without a shirt. Visitors should always seek guidance concerning acceptable clothing," the Foreign Office advises Britons travelling to Saudia Arabia.

This isn't the first time that an airline has attempted to impose a dress code on passengers. Earlier this year, US carrier United Airlines made headlines after they barred two girls from boarding a plane because they were wearing leggings.

Earlier this year, United Airlines barred two girls from boarding a plane because they were wearing leggings Credit: This content is subject to copyright./MLADEN ANTONOV

Twitter users accused the company of "policing" women's clothing but United insisted they were simply enforcing an existing policy on dress codes for people, such as the girls, who were travelling on “buddy passes” that allow discounted travel for friends and family of employees.

Last year, Air France stewardesses were furious after being told to wear headscarves in Tehran, the capital of the Iran, to cover their hair once they disembarked.

While most airlines don’t impose passenger dress codes but for safety reasons during emergency evacuations, passengers who aren’t wearing shoes can be refused boarding. Passengers can also be refused boarding if they are deemed to not be “properly clothed” or wearing clothes thought to be offensive to fellow passengers. Earlier this May, a group of women travelling to Magaluf on a hen do was removed from a Jet2 flight for reportedly wearing t-shirts that read “B*****s on tour”.