Sags need their clothes to do this more than anything...
Your sign tends to jet off to local and foreign locales at a moment's notice, so you keep your passport close and your wrinkle-free clothing closer.
Sagittarius needs clothing that can pack easily, get rolled up and smashed in with impulse souvenir purchases, and live to tell the tale.
Rayon blend fabrics give you breathability, important in certain climates, and are easily washable wherever you find yourself.
Styles that can do double-duty, such as flowy black pants that can practically double as pajamas (try some well-made yoga pants), or white tees that can be worn under almost anything are your best bets.