Pop group G.R.L. are in shock following the sudden death of member Simone Battle.

“Words cannot express the depth of our loss. Simone’s incredible talent was only surpassed by the size of her heart,” they said in a statement.

The 25-year-old X-Factor contestant and G.R.L. member was found dead in her apartment in West Hollywood on Saturday by her father Anthony Battle.

Only last month Battle visited Australia, where G.R.L. had a double platinum hit with Ugly Heart.

Battle became a member of G.R.L. in 2012 just as she was about to become the new Pussycat Girl.

X-Factor creator Simon Cowell posted, “I am so sad to hear about the news Simone Battle has passed away. She was such a fun nice person. It’s such a loss. Rest in peace Simone.”

In a statement her management company Reign Deer Entertainment released: “We are deeply saddened by the tragic loss of Simone Battle of G.R.L.

“Simone was an exceptional young talent and human being, and we are all devastated to learn of her passing. Our thoughts and prayers are with her family and loved ones at this time.”

X-Factor judge and Pussycat Girl Nicole Scherzinger wrote, “Dedicating my performance tonight in South Africa to ?@GRLSimone & any1 struggling w/a hard time Please ?#NeverGiveUp ?#Madiba ?#Don’tLooseFaith”.

Paula Abdul tweeted, “My heart & prayers go out 2 ?@GRLSimone’s family, band mates, & loved ones. Such a beautiful sweet promising star. May she rest in peace. xoP”