As for hair, Delta said that attendants must have a “natural-looking” color with “no stark highlights or unnatural shades.” Should their hair be longer than shoulder-length, it must be “pulled completely back and secured away from the eyes." But, if it still extends past the middle of the back, it needs to be pinned up.

When it comes to being a flight attendant, there are certain rules that they must adhere to, especially regarding their appearance, which may include guidelines on clothes, hair, and even nails. For example, Delta Airlines requires their flight attendants to keep their nails trimmed and wear certain nail polish colors, like pink and red.

Delta Airlines is looking for flight attendants to help staff the friendly skies, but applicants seem to be struggling in the dress code department.

Related: Popular Vacation Airline Fined Over Female Flight Attendant Dress Code. While rules for being a flight attendant have since loosened up dramatically, airlines still hold

Delta Airlines' website crashed after opening the flight attendant job applications for the first time in over a year.

Applications are now open to become one of Delta's newest flight attendants, and the competition is fierce this year.

Delta reminded flight attendant hopefuls to wear adequate undergarments to any of its assessments in a leaked memo.

Delta Flight attendants spend the most time with our customers and are the face of our airline. They must be passionate about enhancing each customer's experience while embodyin

The memo also covers a range of appearance-related guidelines, including grooming, hair, jewelry, and clothing standards. It emphasizes that these requirements, though inclusive, are part of the airline's longstanding tradition.

The document gave specific details on how they should look when interviewing in person, saying that "proper undergarments must be worn but must not be visible."