An airline has triggered a storm on social media after two girls were banned from wearing leggings on a flight.
United Airlines enforced the dress code on a flight from Denver to Minneapolis this morning, gun reform activist Shannon Watts told her Twitter followers.
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"A United gate agent isn't letting girls in leggings get on flight from Denver to Minneapolis because spandex is not allowed?" she wrote on Twitter.
"She's forcing them to change or put dresses on over leggings or they can't board. Since when does United police women's clothing?
1) 3 girls inspected for wearing perfectly acceptable leggings. 2 not allowed to board. I don't care what kind of passengers they were. https://t.co/9VwGKgvWys— Shannon Watts (@shannonrwatts) 26 March 2017
"Gate agent for flt 215 at 7:55. Said she doesn't make the rules, just follows them.
"I guess united not letting women wear athletic wear?"
But the airline has defended the move, saying the girls were travelling on a ticket that had a dress code.
The girls were wearing leggings (stock photo)
Because they were "pass" travellers - issued to employees or eligible depends, they were subject to a stricter dress code.
"The passengers this morning were United pass riders who were not in compliance with our dress code policy for company benefit travel," the airline tweeted.
But social media users have pointed to the airline once promoting a yoga event with a picture of a woman in leggings on Twitter.