Her 20-piece collection with the brand will launch in January 2015 and WWD reports the line-up will include signature dresses, tees and jeans retailing between £42 and £177.
"'The collection is inherently the missing pieces of my dream denim wardrobe. Which, as ever, is predominantly inspired by a late Sixties, early Seventies aesthetic" Alexa told WWD.
And remember her debut book, It, that was published last year? Alexa's also been busy promoting the paperback edition and recently shared a photo with the caption:
"Paperback edition of IT will be available to buy from 7th of August. :-) thank you to those who made it the best selling fashion tome of last year (that's a real actual fact (I know.)"
LOVE ALEXA'S STYLE? Here's a look at more sartorial successes from the model lady - not that she ever gets it wrong.