daniella_gemma.jpgDaniella Helayel is saying goodbye to Issa London! The founder and creator of one of the Duchess of Cambridge's most beloved brands has left the company by mutual agreement. Taking her place is Blue Farrier, who has previously worked at Chloé, Stella McCartney and Anya Hindmarch.

While no official announcement has been made, Helayel spoke to WWD about her decision to depart the label she founded in 2001.

"The time has come for me to move on to focus on my art, travel and other interests," she said. "Creating Issa has been one of the most rewarding things in my life. I may be leaving, but the Issa girl will live forever in my heart."

Despite the so-called mutual agreement, WWD reports that a source claims that both Helayel and the company have been unhappy for some time. The news will not affect Issa's collaboration with Banana Republic, which launches in August. Meanwhile, Camilla Al Fayed, who bought a majority stake in the brand will continue in her role as chairwoman.

Arguably Helayel's most iconic Issa design goes to that dark blue jersey dress worn by Kate Middleton at the announcement of her engagement to Prince William in November 2010.