Spirit Airlines says it has had to enforce the stricter dress code after incidents involving inappropriate outfits. The rules include stopping passengers from boarding if they are barefoot or wearing ...

Spirit Airlines' new dress code isn't the only one. Many airlines are getting strict about what passengers can wear; here's what's 'proper'.

Much like the iconic caveman from Hanna-Barbera's The Flintstones, Hollins went barefoot and sported a blue necktie and a short-sleeve, leopard-print loincloth with a jagged hemline. He completed ...