Get the look: Sarah Jessica Parker in Donna Karan

Ladies, a lesson in trans-seasonal dressing from the style queen herself, Ms. Sarah Jessica Parker. At last week’s New York premiere of The Big C, SJP opted for an effortlessly elegant look in a pared-down parker, grey jersey dress and, shocker of all shockers, flats.

We love the relaxed girl-about-town look – especially the draped waterfall detailing on her softly tailored Donna Karan jacket – so much so, in fact, we rather fancy recreating her look for ourselves.

Edun parka, £355, exclusively at Browns Fashion

Edun’s cropped-sleeve lightweight parker is the perfect throw-on jacket for this unpredictable weather, and not only does that ruffle collar give it a bit of structure, it also instantly updates a classic piece with a fresh focal point.

Long sleeve jersey dress, £20, ASOS

A grey jersey dress is a wardrobe staple and a great base for layering – we like this long-sleeved version from ASOS that’ll see us through to the end of summer and take us into the new season.

Beads Off blue fabric necklace, £14, Topshop

Inject a splash of colour with a statement necklace – SJP opts for a blue beads to break up the neutral tones of her dress and jacket, and we’ve found a purse-friendly option at Topshop, complete with metallic beads and a chiffon tie.

KG by Kurt Geiger Lottie sandals, £59, Kurt Geiger

Finish the look by adding a touch of twinkle to your toes with a pair of jewelled sandals – they’re practical and pretty, and perfect for spicing up a simple outfit.