32-year-old Cher Maximen was stabbed in the groin and died in hospital six days later.
20-year-old Shakiel Thibou from Shepherds Bush appeared via video-link from HMP Belmarsh.
His brothers, 24-year-old Sheldon Thibou and 21 year old Shaeim Thibou appeared via video-link from Wandsworth Prison.
All three have been remanded in custody with a provisional trial date set for next February.