The German model, 21, also posted a photo of herself in a bikini top and jean shorts on Instagram surrounded by the male models.
Garrn was spotted vacationing with the 'Wolf of Wall Street' actor, 39, in Bora Bora earlier this month where they held hands and kissed while walking along the shore, reported Us magazine.
The Victoria's Secret stunner has been dating him since May 2013 but has not publicly spoken about their relationship. DiCaprio recently hinted he is ready to settle down.