I think I dream in paisleys, so, for me, this collaboration is just a dream come true,” Florence Welch tells Vogue from her Camberwell home. She has developed a habit of waking up, drinking lots of coffee and writing poetry in her pyjamas. Thus, when faced with the decision of what garment to splash Liberty London’s signature prints on, it was a no-brainer.

“It just makes sense to have nice pyjamas to work in!” she justifies. “And when I’m touring and travelling it makes me feel at home if I’ve got some nice patterns to sleep in. But actually, I just really fucking love pyjamas! It's weird because I wear nighties on stage, but pyjamas to sleep in.”

Liberty invited Welch to come and have a conflab on all things printed with in-house archivist Anna Buruma. Welch was immediately attracted to the worn-down, hand-painted iterations of some of the department store's oldest paisleys. “I’m a romantic, so I wanted to avoid restoring the patterns and to keep the faded look to them,” she says.

Highlights from the six botanical prints available in seven colourways are as follows: Patricia, a pink paisley; Delilah, a whimsical bunch of azaleas, carnations and star flowers; Leontine; a purple, green and harvest gold fern print from 1963; and Evelyn; a motif obtained from a book of drawings dating back to 1820, redrawn and brought to life in blush and blue. Each set of vines creeps up classic PJ sets, short PJs, short and long kimonos, chemises, and camisole and knicker sets.

The collaboration came about naturally because, as Amelia Hornblow, director of product, explains: “Florence embodies the Liberty London women. She has an eclectic style and her sense of adventure mirrors that of Arthur Liberty, the original founder.” Welch giggles at the comparison: “I am kind of a maximalist at heart, I'm not even sure I have anything plain in my wardrobe.”

She has been collecting Liberty prints from vintage stores since she was young – “I don't really know what that says about me as a person, but I have always been attracted to them" – and she finds the historic aura of the West End store homely. Being at the centre of the patterned universe has not ignited a desire to branch out into design, however. “I have such a joy in fashion that I don’t know if I could retain it if it was my job,” she muses. “And I don't know if everyone needs lots of flares and paisley waistcoats, which is probably what I’d end up making.”

She’ll be wearing the Liberty kimonos both at her kitchen table to “encourage flashes of inspiration in the morning”, and on the promo trail for her fourth album, High As Hope, due for release on June 29, and book of poetry, Useless Magic, slated to hit bookshop shelves in July.

“It’s been 10 years since Lungs [her debut album], so I think I’m able to explore things in a deeper way, with more honesty. Musically, it feels like High As Hope is a very pure, distilled expression of what I want to do.” She spent six months in solitude laying the tracks down with one engineer and then took her work to LA and New York to collaborate with the likes of Sampha, Jamie XX and Tobias Jesso Jr. Were they all wearing paisley PJs? Who knows, but her enthusiasm for sleepwear is infectious.

Priced between £55 and £395 at Libertylondon.com from June 20.