This makes complete sense why jeans are worn during travel, cause they are super comfortable and these celebs prove to be the evidence. We always spot celebs at the airports and they are always wearing their super comfy jeans outfits wither it's whatever new trend to the classic jeans paired up casually to formal party wear.
Here's a link showing celebs travelling and wearing jeans jeans and jeans - http://www.mid-day.com/photos/photos-hrithik-roshan-anushka-sharma-other-celebs-return-from-iifa/8940
Is there any other big fashion reason why celebs are always seen at the airport in jeans? and doesn't this make Men's Jeans and Women jeans as the travel staple piece?