American Airlines is holding a contest to determine which flight attendants—male and female—looked the most “superb” in the carrier’s new scarves, ties, and striped shirts, reports the Daily Mail.

The winners will appear as models in a company photo shoot.

A flight attendants’ union is not having any of it.

In a statement about American’s “Face of Your Base” contest, the Association of Professional Flight Attendants said:

“This campaign just transported us back 50 years to the days of girdles, weight-checks and single, female-only stewardesses having to quit when they were married, pregnant, or reached the ripe old age of 30.”

In its own statement, the airline had this to say:

“This campaign is about celebrating the hard work and diversity of our flight attendants, while giving them the opportunity to spotlight their peers who live the American brand.”

The carrier said the campaign was “created by our Customer Experience team in Chicago, comprised of both flight attendants and field managers.”

Twitter users have spoken up about the contest, but the airline’s official Twitter feed—which focuses heavily on customer service issues—has yet to address the matter.