Backup Wardrobe Under $150

Target, $34.99 If you find yourself on a beach vacation without a swimsuit, spring for a classic one-piece. It can also double as a tank top under a pair of shorts. (Target)

H&M, $7.95 A basic T-shirt can go a long way. If you can, spring for two: one solid and one print to mix things up. (HM.com)

Old Navy, $29.99 Dress them up or dress them down. (OldNavy.com)

Forever 21, $24.80 A simple blazer can be a formal and casual way to keep warm if the temperature drops. (Forever21.com)

Forever 21, $12.80 No matter what season, The Little Black Dress never fails! No wonder it's a wardrobe essential. (Forever21.com)

Payless, $16.99 It seems ballet flats will never go out of style … probably because they go with just about everything! Best of all, they're easy to find at budget-friendly prices. (Payless.com)

Gap, $19.99 A basic, solid-colored skirt is a great way to switch it up from jeans. (Gap.com)

And, of course, we can't forget about an emergency makeup kit! NYC Smooth Skin Pressed Face Powder Compact, $2.69  Wet n Wild MegaWink Mascara, $2.99  Wet n Wild Silk Finish Lipstick, Retro Pink, $0.99(Tip: Lipstick can also double as blush or eyeshadow!)  CoverGirl Eye Enhancers One Kit Eye Shadow, Swiss Chocolate, $3.19 (Drugstore.com)