This fall, I'm taking cool girl style cues from Hanneli Mustaparta by layering up a summer frock with a couple of key pieces. Extend the life of your favorite summer dress by adding a boyfriend cardi or leather jacket and a pair of motto boots. Ready to take on cooler temps with super hot style? Check out these eco chic items:

RECLAIM TO WEAR STRAPPY DRESS, Top Shop, $80. #upcycled

ELBOW PATCH CARDI (similar to one shown), Chinti & Parker, $460. #carbonneutral #handfinished 

TAN JANE BAG, Claire V., $175. The perfect go-anywhere bag! #madeinUSA 

RIDE BOOT, Frieda Salvador, $595. I love the style of this boot- motorcycle meets equestrian! #madeinSpain #fair #ethical