The 24-year-old model was spotted sitting very close to DiCaprio while they were chatting, reported Ace Showbiz.
The rumored couple, who reportedly spent their weekend together in the Hamptons a couple of days ago, were "very flirty," and Rohrbach looked "very into him."
The two arrived separately at the CFDA after-party.
They sat together and chatted intimately at a private corner table.
DiCaprio and Rohrbach were first rumoured dating when they were spotted getting close at 1OAK in Los Angeles back in April.