The nostalgic nineties may have transfixed us for the past seasons, but come Spring 2015, fashion’s got an all-newdecade of choice. Let’s hear it for bellbottoms, sexy silks and peasant blouses because the seventies are back. And while disco may be the first image that comes to mind when thinking ‘70s style, this season’s diverse runways highlight the decade’s many forms. At Saint Laurent, it was all about glam rock, with short shorts worn alongside leather jackets, while at Valentino, flowing peasant dresses recalled era icons like Ali MacGraw and Talitha Getty.

The decade’s prevalence shone through with the use of suede and fringe and as well, with everyone from Etro to Proenza Schouler embracing a bit of swing. Elsewhere, designers jumped two decades prior, with the 1950s staple gingham popping up on shirtdresses at Altuzurra and Michael Kors.

And while fabric play was a big Spring fashion 2015 moment, silhouettes were also up for experimentation, with culottes, a street style favourite, reigning supreme. On the runway, relaxed calf-grazers were paired with tailored tops and waist-defining details, which were seen across the board at Marni, Céline, Edun and more.

Mixed messages are a standard state of play, but if there was one trend that everyone got on board with, it was denim. Whether embellished on baggy jeans à la Dolce & Gabbana or Canadian tuxedo-style at Roberto Cavalli, Moschino and Prada, denim got the runway treatment who couldn’t be on board with that?

In the words of Rihanna, denim is “like the f***ing Beatles.” It will never (ever) go out of style.