Hot on the heels of the launch of her own label, Inamorta, which specialises in swimwear and simple basics, the 28-year-old has created her first clothing line with the affordable global e-tailer.
The collection, inspired by Ratajkowski's own personal style, includes all the must-have summer 2019 trends, from mint, lilac and tie-dye colourways to puff sleeve prairie dresses and tops.
"My personal style is a little retro," says Ratajkowski. "I'm very much into Princess Diana right now - so a little '80s, some menswear mixed in with a little bike short, or something really feminine".
Known for her love of bodycon clothing, the collection also incudes form-fitting dresses, as well as risqué cut-out crop tops and sheer mesh designs.
As for her favourite piece from the collection? The feminist and activist, unsurprisingly, referenced one of the collections two power suits, a staple in Ratajkowski's off-duty wardrobe.
"I'm obsessed with it, I love the colour, it's the best" she said of the tan 'Business As Usual' oversized linen two-set .
As for her tips on how to pull of the Nasty Gal pieces in the spirit of Em Rata herself? "The sexiest thing about a person is their confidence," she says.
Nasty Gal x Em Rata is available to buy now, with prices ranging between £14-£80 and sizes 4 to 22.
Scroll through the gallery above to shop the collection.