What to Wear on Planes: Summer Edition

I'm going on a super-big trip soon (stay tuned for more info and posts on that later!), and I'm already thinking of what I'm going to pack and also what I'm going to wear on the plane.

Whether you fly international or domestic, what you wear on the plane matters, since you'll either need to be comfortable, or efficient, or both. Plus, this changes when you're in specific weather, too. In the summer, you'll want to take into consideration the heat outside and varying levels of air conditioning on planes and in airports or other transportation.

Here's a sample outfit, built for a particularly long day of travel (I'm talking about 12 hours or more):

What to Wear on Planes: Summer (Long Flight) by savannahinwonderland featuring a stripe tunic

And here are some clothing-related travel tips (for both ladies or the guys in the audience):

• Depending on the length of your flight or how much you're packing, you may want to wear your bulkiest items on the plane. I'm talking about thicker jackets/cardigans/sweatshirts, boots, thicker shoes, etc.
• Scarves make for great blankets and/or pillows in a pinch.
• It wouldn't hurt to bring a spare, simple change of clothes in your carry-on luggage, just in case your luggage gets lost or delayed in transit.
• Bring comfy socks on the plane. You'll want to take your shoes off on longer flights, but the A/C vents by your feet can get really, really cold. (Just keep in mind that if you walk around the plane in flight, you'll want to put your shoes back on, so slip-ons are a good idea for that reason.)
• Minimal jewelry is a good idea to help expedite security. Again, so are slip-on shoes.

What do you wear on planes? Do you have any favorite tips for travel wear?