The 22-year-old model took to Instagram and posted a photo of herself with the fashion designer and wrote, "I miss L'Wren so much and I am so sad she isn't here anymore. She was such a big part of my life."
She added, "I will never forget all the fun times we had together. She was part of our family and always will be. Rest in peace."
Scott was found dead in her Manhattan apartment on March 17. The New York City Medical Examiner's Office ruled her death to be a suicide by hanging following an autopsy.
After her passing, Mick Jagger wrote on Facebook, "I am still struggling to understand how my lover and best friend could end her life in this tragic way. We spent many wonderful years together and had made a great life for ourselves.
"She had great presence and her talent was much admired, not least by me. 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."
Mick and his band, the Rolling Stones, subsequently postponed several March/April concert dates in Australia and New Zealand following Scott's death.
However, on Monday, it was announced that the group has rescheduled the shows and will kick them off on Oct. 25 at the Adelaide Oval. What's more, it was revealed that two extra shows have been added Down Under, bringing the total now to nine.