Mariah Carey is still wearing her engagement ring from former flame James Packer.
Carey attended the event with her boyfriend, Bryan Tanaka, with whom she reconciled in the spring.
The ring was visible in a photo she shared on Instagram of herself and Takana at the dinner.
"@vmagazine," the star captioned the picture for her 6.1 million followers.
Packer said producer Brett Ratner introduced him to Carey during "a low point" in his personal life.
"She was kind, exciting and fun. Mariah is a woman of substance. She is very bright. But it was a mistake for her and mistake for me," he said of their relationship.
The singer was linked to Tanaka shortly after, and got back together with the dancer in May after reportedly breaking up in April.