It can be tricky knowing what to wear during late summer and early fall when temperatures can spike or plummet from one day to the next. Here, a guide to what's been in this summer that will carry forward, trend-wise, into the fall to spark up your cooler-weather wardrobe. The bonus, too, is that you might be able to pick up a few of these items on sale now. Look for:

Black is reliable and always wearable when you're speaking about jersey dresses, but newer is a jewel-toned style.
Wear now with: Tan and wood, or silver accessories.
Wear in the fall with: Matching hosiery, patent leather shoes and bag.

From gladiator sandals to open-toe booties, footwear right now celebrates the well-manicured foot.
Wear now with: Bare legs and a coral-coloured pedicure.
Wear in the fall with: Matching opaque tights.

Oversize remains a major trend in the purse world. (Just don't go too big or, as you know, you'll fill it and do damage to your shoulders lugging it around.) The best new shades for a roomy carryall this season include indigo, dark green and intense burgundy.
Wear now with: Light, neutral clothing like white denim, tan linen or grey cotton.
Wear in the fall with: Deep dark suiting and knits.

Skinny cigarette-legged jeans may be a teen and 20-something must-wear, but a wider cut is more flattering. Fashion works in hyperbole, so know that wide-leg, wearable jeans will abound for fall.
Wear now with: White T-shirts, white shirts, trim blazers and chunky heels.
Wear in the fall with: T-shirts, white shirts, trim blazers and chunky heels.

This button-up blouse style is polished and put together. To avoid looking overly prim, contrast your outfit with jeans or a pair of heels in an unusual colour.
Wear it now with: Pencil skirts and boot-cut jeans.
Wear it in the fall with: Full-legged dressy plaid, tweed, flannel or tweed trousers and a great glossy leather belt.