The number of outfits you should pack for a 7-day trip depends on how many activities you have planned. If you have a lot of formal events and sports activities, you will generally have to pack more outfits. However, pack between 5-7 outfits that consist of items you can mix and match in different ways. There is no need to pack 7 of everything. Be smart and be creative with the way you style your outfits.