Mariah Carey and James Packer attend G'Day USA gala after engagement

Mariah Carey and James Packer attend the 2016 G'Day Los Angeles Gala at Vibiana. (AFP/Getty)

Mariah flashed her 35-carat engagement ringer. (AFP/Getty)

The US, 45-year-old Mariah stunned in a sleek black gown. (AFP/Getty)

Mariah Carey and James Packer made their first red carpet appearance since the engagement. (AFP/Getty)

Nicole Richie and Joel Madden (AFP/Getty)

Hugh Jackman (AFP/Getty)