Leona Lewis has been joined by William Tempest in her search for the next big ethical designer.

The 'Bleeding Love' hitmaker - who has teamed up with Talenthouse to launch a competition for young fashionistas to submit ideas for a new environmentally-friendly stage outfit for her to wear - will now be accompanied on her mission to find a rival to Stella Mccartney by both British designer William and UK Glamour editor Jo Elvin.

Leona said: "I'm extremely thrilled to be joined by Jo and William. They are two people who are leaders in the field of fashion and that I've had the privilege of working with before.

"They take this competition to a whole new level."

With William having dressed the likes of Victoria Beckham, Kate Moss and Emma Watson throughout his career as a designer and Jo having overseen thousands of fashion shoots during her time at the helm of Glamour magazine, the pair will help Leona pick out a future designer of tomorrow.

The winning design will be brought to life by a team of professionals and Leona will wear the outfit during an upcoming performance later in the year.

She also choose two runners up who will have their designs featured across her website and social media sites and receive $350 each.

Entries must be submitted by November 17th, and the winner will be announced on December 1st.