Leonardo DiCaprio Looks Like Jack Nicholson -- Heeeeeere's Jack!

Leonardo DiCaprio can't handle the truth ... he's really starting to look like Jack Nicholson.

The 39-year-old actor resurfaced in Malibu with girlfriend Toni Garrn Sunday ... bearing a striking resemblance to his co-star from "The Departed."

All work and no play makes Leo a dull boy.