The fashion designer was laid to rest earlier today, in Los Angeles.
The intimate service, was thought to have been attended by just 60 close friends and family and took place at the Hollywood Forever Cemetery.
L’Wren tragically took her own life last week, at her apartment in Manhattan, New York City.
Mick, 70, who postponed the Rolling Stones tour dates to be with his family, has been staying in Beverley Hills while arrangements were being made.
Sadly, the upsetting events have been marred by a family feud, with L’Wren’s sister, Jan Shane, claiming she’s been frozen out by her brother, Randall Bambrough, who reportedly arranged the funeral without her.
She said: “I have been frozen out of my own sister's funeral. [My brother] Randy won't talk to me or call me about the arrangements, or my hopes that L'Wren be buried beside mom and dad.
“I am very angry about this and I cannot get answers from anybody and now I have given up expecting to hear from Mick or anyone.”
Mick expressed his shock and sadness at L'Wren's death on the Rolling Stones' official Facebook site, writing:
"I am still struggling to understand how my lover and best friend could end her life in this tragic way."