American Tourister makes a carry-on with a "suiter," which is a small garment bag (basically big enough for a suit) which folds into thirds and fits inside the suitcase. Even though it folds, your suit does not get wrinkled, and anyway, you can hang it up overnight. The bag has a pop-up handle and wheels and is the perfect size for an overnight trip. And NO BAGGAGE CHECKING! I found mine at Sam's Club for $30, which is a steal, but if you check out places like Wal-Mart, CostCo, etc, you should be able to find one for a good price. It's a great investment.