Rachel Bilson is a pocket-size goddess of sartorial style – she’s just 1.58m tall – and she rocks a fitted black blazer like no one else in Hollywood. As far as we’re concerned, RB doesn’t put a dainty, size-five foot wrong when it comes to fashion.

Reminiscing about her time as Summer Roberts on The O.C. gave us a serious case of teenage nostalgia, but we’re glad she’s swapped skimpy-cute for understated chic. She always makes our Best Dressed list – and the perfect accessory to her look has to be her laid-back, be-yourself, who-cares attitude. She recently outed herself as a Justin Bieber fan (she blames her little sisters), and her dearest wish in life is to have the rotating closet fromClueless. And wouldn’t it be full of fabulous clothes!

“I have pea coats, menswear-inspired outfits, motorcycle jackets and flowy, feminine dresses,” she says.

“If I had to choose just one outfit to wear forever, I’d go for a long floral dress with my Balmain leather jacket and lace-up booties. But I usually wear jeans, a cosy knit sweater and boots, though. Shoes always come in first – but now I’m able to design to fill what voids I find in my closet!”

Yep – if she can’t find the right shoes, Rachel whips them up. The Hart of Dixie star has teamed up with celeb stylist Nicole Chavez to release a line of footwear for fashion site ShoeMint. We love that she’s so dedicated to elegance she’ll roll up the sleeves of her tailored silk shirt and get to work!

Her simplest style secret? “Go for neutrals, with a pop of colour.”

Given the star’s comfy-chic style, designer credibility and endearing nonchalance, we’ll be taking that advice straight to the shops. Got to trust the girl – she is tight with fashion royalty Karl Lagerfeld, after all.

Rachel covers the March issue of Cosmopolitan.