Perfect for night owls and early birds alike, the sleepwear-as-outerwear look isn't showing any signs of exhaustion

First there were pipe-trimmed silk tops, then full matching suit sets, then the ubiquity of the Gucci fur-lined Princetown loafers and slides; it wasn't long until the fashion set's eyes were engaged in full REM at all the pyjama-inspired wear.

The trend has evolved, this season, falling into a deeper, slightly more lucid take, still very much inspired by loungewear and sleep apparel - but, like all good dreams, an off-beat twist.

The next step for fashion’s indefatigable pyjama trend

Now, you can witness the trend in a suggestion of a robe in a coat collar styled with a belt over the top a la Etro or a matching kimono suit set such Erdem. There are blanket drapes of knitwear as seen at Michael Kors and Stella McCartney, and those furry loafers have evolved into full-fledged furry slippers and Ugg-esque fluffy shoes. Anya Hindmarch's pairs were adorned with fantasy creatures that blinked as models walked.

The next step for fashion’s indefatigable pyjama trend

Like all good trends that tend toward the casual, Antipodeans are leading the charge with two labels championing the pyjama trend and its new evolution. Firstly, take New Zealand label, Willa & Mae. Their high-quality, silk and cotton garments benefit from precision cuts without compromising on the effortless, comfortable nature of pyjama wear. Garment interiors are finished with French seams (a couture technique that ensures minimal skin irritation) whilst making them robust enough to wear out of the house.

The next step for fashion’s indefatigable pyjama trend

"I think we're entering into an era of sophisticated comfort and the classic, elegant nature of the pyjama has led to a new way to approach style, for sure," say sisters and co-founders of label, Willa & Mae, Rana Reuther and Emma Clarke who form the brand alongside designer Jane Mow. "You can moderate and scale on the level of 'pyjama' you add to your looks. Depending on how outlandish or ballsy you are, the pieces can all be matched with different wardrobe items. The silk PJ shirts for example, look incredible for the office with a slim trouser and heels, or matched with your favourite jeans for an effortless weekend look. The PJ Robe again, is such an incredible piece that can easily be interpreted as a coat."

The next step for fashion’s indefatigable pyjama trend

For Australian label Jasmine & Will, it's a similar story. "I think it's an overall shift to a more relaxed way of dressing," explained founder Jasmine Lindsay. "A number of our pieces this season can cross over to the day for as luxury lounge wear because we believe in versatility when you're investing in quality garments." This collection assumes a preppy, All-American spirit with a touch of tomboy that walks the line between natural and feminine. "I really admire the classic American style, practical, effortless and confident, a style that will never lose its enduring appeal. This season was all about revisiting the classics and anchoring our brand as timeless."

Has there ever been a better time to have a pyjama party?

The next step for fashion’s indefatigable pyjama trend