The manager has joined on a two-and-a-half-year deal after he paid half of the £4.
The couple has not officially legalized their union in four years of relationship.
In attendance were Kylie's boyfriend, Travis Scott, as well as most of her immediate family, but not all: Caitlyn Jenner was absent, as was Kourtney Kardashian, who's currently vacationing in Egypt.
While the paparazzi snapped the other relatives during the trip, Travis Scott managed to dodge the photographers.