Mick Jagger 'Struggling to Understand' Death of Girlfriend L'Wren Scott

Mar. 18, 2014— -- Mick Jagger said he is still "struggling to understand" why his girlfriend of more than 10 years, noted fashion designer L'Wren Scott, ended her life yesterday.

"I am still struggling to understand how my lover and best friend could end her life in this tragic way," the Rolling Stones frontman said in a statement released today on his website.

On the homepage of his website, Jagger posted a black and white photo of the former model, simply titling it "L'Wren."

Fashion Designer L'Wren Scott Found Dead in Apparent Suicide

"We spent many wonderful years together and had made a great life for ourselves," Jagger wrote. "She had great presence and her talent was much admired, not least by me."

He added, "I have been touched by the tributes that people have paid to her, and also the personal messages of support that I have received. ... I will never forget her," he signed it simply, "Mick."

L'Wren Scott's Death Brings Grief to Fashion Pros, Twitter Reacts

Jagger and his band were on tour in Australia when they received news of Scott's death.

The 49-year-old designer was found dead yesterday in her New York City apartment of an apparent suicide, according to police.

Scott was a renowned stylist and fashion designer whose clothes have been worn by A-listers including Nicole Kidman, Angelina Jolie and Penelope Cruz. In February, she announced that she had cancelled her London Fashion Week show.

In addition to her career in fashion, Scott had been romantically linked to Rolling Stones frontman for more than a decade.

Watch: Shocking Apparent Suicide of Designer L'Wren Scott

The band announced today that it has postponed its tour of Australia and New Zealand, which had been scheduled for Mar. 19 through April 5.

In a statement, the group said, "The Rolling Stones are deeply sorry and disappointed to announce the postponement of the rest of their 14 ON FIRE tour of Australia and New Zealand following the death of L'Wren Scott. Mick Jagger, Keith Richards, Charlie Watts and Ronnie Wood wish to thank all of their fans for their support at this difficult time and hope that they will fully understand the reason for this announcement."