Kaia Gerber is "down on [her] knees" with grief for her late brother Presley Gerber.
The 25-year-old model paid a heartfelt tribute to her sibling after he passed away at the age of 27 on 20 September, in which she remembered him as her "ultimate teacher" and the "love of [her] life" as she expressed her regret that he had passed away "first" after she had spent so many years following in his footsteps.
