How can I pack two weeks of luggage into a carry on that I can bring onto an airplane?

your carry on cannot be more then 40 pounds and no larger than the smallest size roller, a duffel bag will hold more and is more likely to be "approved" for carry on, pack one weeks worth of outfit's and just wear each outfit twice, you don't need 14 outfits. the only real problem you'll have is with your liquids and gels. You cannot bring your shampoo's or makeup items unless they are 3.4 oz or less so have money to buy what you need at your destination. you can also only have one carry on and one personal item (purse), I see people try to bring a small roller, a duffel, and a purse... this is a no go.

Make sure that wherever you are going has a laundry. Although, as I have a 15 year old daughter, I feel your pain. She would be distraught at that limitation unless she was going to the beach.

ehhh 40 pounds?? what is this? im traveling for a month...i use lots of clothes omg D:well anyways i suggest packing clothes that aren't too big or a better term would be ones that don't take up too much space :[