The Do It Like A Dude star - who is openly-bisexual - told BBC
Radio DJ Chris Moyles: "I'm excited to be a coach, inspiration and
mentor and I jumped at the opportunity as it's all about 'The
Voice'."
The 23-year old went on to praise the audition process, telling
Moyles: "I do think sometimes that a lot of people don't audition
for these shows because... they don't feel they look like a
popstar. I can't wait, I'm so excited about it."
The star was most recently seen on ITV's X Factor as a guest judge
for Tulisa Contostavlos.
Christina Aguilera, Cee Lo Green, Adam Levine and Blake Shelton
are currently the judges on the U.S. version of the show, which
sees mentors choose their contestants on the basis of a 'blind'
audition.
Controller of BBC One, Danny Cohen said in a statement: "Jessie J
is going to be an amazing coach on The Voice UK. She's a massive
young star with a strong personality, and her recent MOBO
nominations are testament to her musical and creative ability."