They're BFFs both on and off the runway, and now, model/actress Cara Delevingne and model/reality star Kendall Jenner are taking their friendship to the masses with plans to release a clothing line based on their friendship tag, CaKe. 

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The tag, which combines the first two letters of both women's first names, is reportedly set to be the inspiration behind the upcoming line, and according to the Daily Mail, Jenner is the one who is spearheading the process. 

"[She's the ] main driving force," a source said. "They both see it as a bit of fun but are secretly confident it will do well." 

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The two have already allegedly designed some tops and hats for the collection, which they plan to sell in both the UK, where Delevingne is originally from, and the U.S., where Jenner is from. They even took steps to protect the name from being stolen by someone else by trademarking it over the summer.  

No specific date has been revealed for the collection's launch, and it is unclear what the price points would be and which retailers would carry the brand.  

Delevingne and Jenner's friendship has been well documented, with both often appearing at the same events, and they've even expanded the relationship to other members of each other's families as well.  

In fact, Jenner's mother, Kris, wished Delevingne a happy birthday on Instagram earlier this year, and was rumored to be trying to take the model under her wing and become her "momager" in addition to Kendall's and her other famous siblings.  

Tags: cara delevingne Kendall Jenner