The pop superstar, 56, dazzled in two sparkly red looks for the event, which aims to raise funds to support the protection of children and the conservation of biodiversity.
LVMH is the latest luxury goods giant to be hit by a slowdown in demand for high-end fashion.
Adut Atem Kiir was last seen in the car park by The Point in East Perth - next to the Swan River - at about 2am on Saturday.
The actress, 45, cosied up to her husband, also 45, on the red carpet, while setting pulses racing with her all-leather look.
The 32-year-old says she was advised against turning professional in the sport at the age of 16, despite having started to compete at an elite level.
In a stunning move that once again proved the Australian's credentials as a world champion of the future, the 22-year-old held his nerve as he went wheel-to-wheel in a three-way race to the first corner
