WASHINGTON - United Airlines has run into a social media storm after it barred two teenage girls from boarding a flight in Denver because they were wearing leggings.

Another girl who was also wearing leggings was allowed to board the flight from Denver International Airport to Minneapolis after she changed, a witness said.

A United Airlines spokesman Jonathan Guerin told The New York Times that the two girls barred from flying "made an adjustment" to their clothing and were waiting for the next flight to Minneapolis. He did not know whether they made it aboard.