The 32-year-old will take the role as creative director for her label ALEXACHUNG, and unveil her debut collection featuring ready-to-wear clothes, shoes and jewellery in May 2017.
Speaking to Business of Fashion website about the venture, the style muse - who recently teamed up with the retail store Marks and Spencer to launch her Archive by Alexa Chung capsule - said: "I feel as though I'm kind of prepared to do it now.
"If it had been any time sooner than this, I either wouldn't be responsible enough or have been able to take on this kind of feat.
"I just wanted the freedom to sort of make my own world, without someone else's brand's brief to stick to ... but there are certain boundaries that come with doing something on behalf of someone else, [you] kind of have to keep within their design remit," she said.
"How we present is going to be something we need to really think about. I know how the fashion industry stands today and how it's changing very rapidly. I want to make sure that we are offering something that is exciting and unique and new, but also the point of this brand is that it connects to everyone.
"I'm not making something that has got a crazy high price point. I want to make sure it's something that is speaking to just everyone on the street."
Chung - who has starred in campaigns for DKNY Jeans, Superga and Lacoste - revealed she felt she had to start the fashion house sooner rather than later.
"I feel like I need to get it up and running whilst I'm still young enough to have the energy and still be in touch with pop culture enough to make something that is actually relevant to the audience today."
